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11.发明申请公开(公告)号：US20090092040A1
公开(公告)日：2009-04-09
申请号：US12272546
申请日：2008-11-17
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
IPC分类号： H04J11/00
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Methods and systems for selecting modulation in an orthogonal frequency division multiplexing system are provided. In one embodiment, a method for a remote unit of an OFDM multipoint-to-point communications system comprises: establishing communication between a first remote unit and a host unit, the first remote unit and a plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; transmitting a plurality of tones from the first remote unit such that tones from the first remote unit and at least one other remote unit are simultaneously received at the host unit, the plurality of tones modulated with upstream information using OFDM; modulating up to a plurality of tones using a first modulation scheme when transmitting a first type of upstream information; and modulating up to a plurality of tones using a second modulation scheme when transmitting a second type of upstream information.
摘要翻译： 提供了用于在正交频分复用系统中选择调制的方法和系统。 在一个实施例中，一种用于OFDM多点对点通信系统的远程单元的方法包括：建立第一远程单元和主机单元之间的通信，第一远程单元和通信地耦合到主机单元的多个远程单元 在多点对点配置中; 从所述第一远程单元发送多个音调，使得来自所述第一远程单元和至少一个其他远程单元的音调在所述主机单元处同时被接收，所述多个音调使用OFDM以上行信息进行调制; 当发送第一类型的上游信息时，使用第一调制方案调制多个音调; 以及当发送第二类型的上游信息时，使用第二调制方案来调制多个音调。
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公开(公告)号：US06282683B1
公开(公告)日：2001-08-28
申请号：US09396330
申请日：1999-09-15
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
IPC分类号： G06F1100
CPC分类号： G06F17/14 , G06F17/142 , H04B10/272 , H04H20/78 , H04J3/14 , H04J14/0298 , H04L1/0057 , H04L1/24 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2608 , H04L27/2614 , H04L27/264 , H04L27/265 , H04L27/2652 , H04L27/2657 , H04L27/34 , H04L43/00 , H04L43/0847 , H04L43/0864 , H04L43/16 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2383 , H04N21/4382
摘要： The communication system includes a hybrid fiber/coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber/coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber/coax distribution network. The head end includes a head end multicarrier modem for modulating at least downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating at least upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The head end further includes a controller operatively connected to the head end multicarrier modem for controlling transmission of the downstream telephony information and downstream control data and for controlling receipt of the upstream control data and upstream telephony information. The system further includes service units, each service unit operatively connected to the hybrid fiber/coax distribution network for upstream transmission of telephony and control data in the second frequency bandwidth and for receipt of the downstream control data and telephony in the first frequency bandwidth. Each service unit includes a service unit multicarrier modem for modulating at least the upstream telephony information on at least one carrier orthogonal at the head end terminal to another carrier in the second frequency bandwidth and for demodulating at least downstream telephony information modulated on at least a band of a plurality of orthogonal carriers in the first frequency bandwidth. Each service unit also includes a controller operatively connected to the service unit multicarrier modem for controlling the modulation of and demodulation performed by the service unit multicarrier modem. A method of monitoring communication channels, a distributed loop method for adjusting transmission characteristics to allow for transmission of data in a multi-point to point communication system, a polyphase filter technique for providing ingress protection and a scanning method for identifying frequency bands to be used for transmission by service units are also included. Also provided is a method and apparatus for performing a Fast Fourier Transform (FFT). In one embodiment, a scalable FFT system is built using a novel dual-radix butterfly core.
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公开(公告)号：US20120195184A1
公开(公告)日：2012-08-02
申请号：US13444638
申请日：2012-04-11
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform to the data transmitted by the transmitter; the processor modulating a first carrier of the plurality of spectrally overlapping carrier signals based on a first modulation scheme while modulating a second carrier of the plurality of spectrally overlapping carrier signals based on a second modulation scheme.
摘要翻译： 提供了正交频分复用的系统和方法。 在一个实施例中，多载波调制解调器包括：发射机，被配置为将符号调制到多个频谱重叠的载波信号中的至少一个; 耦合到所述发射机的处理器，其中所述处理器输出用于由所述发射机发射的数据，其中所述处理器对所述发射机发射的数据进行逆傅立叶变换; 所述处理器基于第一调制方案来调制所述多个频谱重叠的载波信号中的第一载波，同时基于第二调制方案调制所述多个频谱重叠的载波信号中的第二载波。
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公开(公告)号：US08406115B2
公开(公告)日：2013-03-26
申请号：US13158322
申请日：2011-06-10
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
IPC分类号： H04J11/00
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a receiver configured to receive a waveform comprising spectrally overlapping carrier signals from at least two of a plurality of remotes, wherein the spectrally overlapping carrier signals are modulated using an inverse Fourier transform algorithm; a transmitter; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform algorithm to the data provided to the transmitter; a controller programmed to calculate an elapsed time for each of the two remotes, the elapsed time representing a time between transmitting a ranging signal to a remote and receiving a signal from the remote in response to the ranging signal; the controller further programmed to reducing any difference between at least two elapsed times by instructing at least one of the plurality of remotes to adjust a delay.
摘要翻译： 提供了正交频分复用的系统和方法。 在一个实施例中，多载波调制解调器包括：接收机，被配置为从多个遥控器中的至少两个接收包含频谱重叠的载波信号的波形，其中使用傅立叶逆变换算法来调制频谱重叠的载波信号; 发射机 耦合到所述发射机的处理器，其中所述处理器输出用于由所述发射机发射的数据，其中所述处理器对提供给所述发射机的数据应用逆傅立叶变换算法; 控制器，被编程为计算两个遥控器中的每一个的经过时间，表示在向远程发送测距信号之间的时间的经过时间，以及响应于测距信号从遥控器接收信号; 控制器进一步被编程为通过指示多个遥控器中的至少一个来调整延迟来减少至少两次经过的时间之间的任何差异。
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15.发明申请SYSTEM AND METHOD FOR CONTENTION BASED TONES IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 审中-公开在多点到点正交频分多路复用系统中基于内容的体系和方法公开(公告)号：US20090238065A1
公开(公告)日：2009-09-24
申请号：US12475000
申请日：2009-05-29
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
IPC分类号： H04J11/00
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Systems and methods for round-trip-delay adjustment in a multipoint-to-point orthogonal frequency division multiplexing (OFDM) system are provided. In one embodiment, a method for a remote unit to request bandwidth in an Orthogonal Frequency Division Multiplexing (OFDM) multi-point to point system comprises: transmitting a signal from a remote unit having a request for bandwidth to a host unit on a first tone, the signal from the remote unit configured to combine with a signal from at least one other remote unit on a different tone to form a coherent OFDM waveform; determining when a collision has occurred on the first tone between the signal transmitted by the remote unit and a signal from at least one other remote unit; and when a collision occurs, re-transmitting the request for bandwidth on the first tone.
摘要翻译： 提供了一种用于多点对点正交频分复用（OFDM）系统中的往返延迟调整的系统和方法。 在一个实施例中，用于远程单元在正交频分复用（OFDM）多点对点系统中请求带宽的方法包括：从具有第一音调的主机单元的具有带宽请求的远程单元发送信号 来自所述远程单元的信号被配置为与来自不同音调上的至少一个其他远程单元的信号组合以形成相干OFDM波形; 确定在远程单元发送的信号和来自至少一个其他远程单元的信号之间的第一音调上何时发生冲突; 并且当发生冲突时，在第一音调上重新发送带宽请求。
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公开(公告)号：US20080225691A1
公开(公告)日：2008-09-18
申请号：US11927428
申请日：2007-10-29
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
IPC分类号： H04J11/00
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a receiver configured to receive a waveform comprising a plurality of spectrally overlapping carrier signals from at least two of a plurality of remotes, the carrier signals are modulated using an inverse Fourier transform; a transmitter; a processor coupled to the transmitter, the processor outputs data for transmission to the transmitter, the processor applies an inverse Fourier transform to the data provided to the transmitter; a controller programmed to instruct the transmitter to transmit timing adjustments to the at least two of the plurality of remotes, the timing adjustments instruct the at least two of the plurality of remotes to adjust transmission timing so that transmitted symbols associated with frames of a predetermined multiframe structure are received in sequence from the at least two of the plurality of remotes based on the structure.
摘要翻译： 提供了正交频分复用的系统和方法。 在一个实施例中，多载波调制解调器包括：接收机，被配置为从多个遥控器中的至少两个接收包括多个频谱重叠的载波信号的波形，所述载波信号使用逆傅里叶变换进行调制; 发射机 处理器耦合到发射机，处理器输出数据以传输到发射机，处理器对提供给发射机的数据应用逆傅里叶变换; 控制器，被编程为指示发射机向多个遥控器中的至少两个遥控器发送定时调整，定时调整指示多个遥控器中的至少两个遥控器调整发射定时，使得与预定多帧的帧相关联的发射符号 基于该结构，从多个遥控器中的至少两个接收序列的结构。
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公开(公告)号：US20080225690A1
公开(公告)日：2008-09-18
申请号：US11927397
申请日：2007-10-29
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
IPC分类号： H04J11/00
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a receiver configured to receive a waveform comprising spectrally overlapping carrier signals from at least two of a plurality of remotes, wherein the spectrally overlapping carrier signals are modulated using an inverse Fourier transform algorithm; a transmitter; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform algorithm to the data provided to the transmitter; a controller programmed to calculate an elapsed time for each of the two remotes, the elapsed time representing a time between transmitting a ranging signal to a remote and receiving a signal from the remote in response to the ranging signal; the controller further programmed to reducing any difference between at least two elapsed times by instructing at least one of the plurality of remotes to adjust a delay.
摘要翻译： 提供了正交频分复用的系统和方法。 在一个实施例中，多载波调制解调器包括：接收机，被配置为从多个遥控器中的至少两个接收包含频谱重叠的载波信号的波形，其中使用傅立叶逆变换算法来调制频谱重叠的载波信号; 发射机 耦合到所述发射机的处理器，其中所述处理器输出用于由所述发射机发射的数据，其中所述处理器对提供给所述发射机的数据应用逆傅立叶变换算法; 控制器，被编程为计算两个遥控器中的每一个的经过时间，表示在向远程发送测距信号之间的时间的经过时间，以及响应于测距信号从遥控器接收信号; 控制器进一步被编程为通过指示多个遥控器中的至少一个来调整延迟来减少至少两次经过的时间之间的任何差异。
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公开(公告)号：US06434583B1
公开(公告)日：2002-08-13
申请号：US09396650
申请日：1999-09-15
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P. Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C. Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark D. Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S. Russell , Calvin G. Nelson , Niranjan R. Samant , Joseph F. Chiappetta , Scott Sarnikowski
IPC分类号： G06F1714
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： A apparatus for providing a Fast Fourier Transform (FFT) and an inverse FFT is provided. The apparatus comprises a radix-N core. The radix-N core includes at least N multipliers. The radix-N core also includes a twiddle-factor lookup table that stores complex twiddle-factors. The twiddle-factor lookup table is coupled to one input of each of the multipliers. The radix-N core also includes a conversion random access memory (RAM) that stores transform points. The conversion RAM is coupled to another input of each of the multipliers. The radix-N core also includes an array of at least N-times-N adder-subtracter-accumulators.
摘要翻译： 提供了一种用于提供快速傅里叶变换（FFT）和逆FFT的装置。 该装置包括基数N核。 radix-N核心至少包括N个乘法器。 radix-N核心还包括存储复杂旋转因子的旋转因子查找表。 旋转因子查找表耦合到每个乘法器的一个输入。 radix-N核还包括存储转换点的转换随机存取存储器（RAM）。 转换RAM耦合到每个乘法器的另一个输入。 基数N核还包括至少N倍N加法器 - 减法器 - 累加器的阵列。
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公开(公告)号：US08174956B2
公开(公告)日：2012-05-08
申请号：US11927445
申请日：2007-10-29
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S Russell , Calvin G Nelson , Niranjan R Samant , Joseph F Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S Russell , Calvin G Nelson , Niranjan R Samant , Joseph F Chiappetta , Scott Sarnikowski
IPC分类号： H04J9/00
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform to the data transmitted by the transmitter; the processor modulating a first carrier of the plurality of spectrally overlapping carrier signals based on a first modulation scheme while modulating a second carrier of the plurality of spectrally overlapping carrier signals based on a second modulation scheme.
摘要翻译： 提供了正交频分复用的系统和方法。 在一个实施例中，多载波调制解调器包括：发射机，被配置为将符号调制到多个频谱重叠的载波信号中的至少一个; 耦合到所述发射机的处理器，其中所述处理器输出用于由所述发射机发射的数据，其中所述处理器对所述发射机发射的数据进行逆傅立叶变换; 所述处理器基于第一调制方案来调制所述多个频谱重叠的载波信号中的第一载波，同时基于第二调制方案调制所述多个频谱重叠的载波信号中的第二载波。
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公开(公告)号：US07881181B2
公开(公告)日：2011-02-01
申请号：US11927428
申请日：2007-10-29
申请人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S Russell , Calvin G Nelson , Niranjan R Samant , Joseph F Chiappetta , Scott Sarnikowski
发明人： Mark J. Dapper , Michael J. Geile , Terrance J. Hill , Harold A. Roberts , Brian D. Anderson , Jeffrey Brede , Mark S. Wadman , Robert J. Kirscht , James J. Herrmann , Michael J. Fort , Steven P Buska , Jeff Solum , Debra Lea Enfield , Darrell Berg , Thomas Smigelski , Thomas C Tucker , Joe Hall , John M. Logajan , Somvay Boualouang , Heng Lou , Mark Elpers , Matt Downs , Tammy Ferris , Adam Opoczynski , David S Russell , Calvin G Nelson , Niranjan R Samant , Joseph F Chiappetta , Scott Sarnikowski
IPC分类号： H04J11/00
CPC分类号： H04W24/00 , G06F17/14 , G06F17/142 , H03M13/1515 , H03M13/356 , H04B10/272 , H04H20/69 , H04H20/77 , H04H20/78 , H04H20/79 , H04H20/80 , H04H60/11 , H04H60/86 , H04H60/96 , H04H60/97 , H04J3/14 , H04J14/0298 , H04K1/00 , H04K3/226 , H04K3/255 , H04L1/004 , H04L1/0045 , H04L1/0057 , H04L1/0071 , H04L1/24 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/023 , H04L5/14 , H04L5/143 , H04L5/1484 , H04L12/10 , H04L12/12 , H04L12/2801 , H04L12/44 , H04L25/03866 , H04L27/2601 , H04L27/2608 , H04L27/2614 , H04L27/2626 , H04L27/2628 , H04L27/2634 , H04L27/2647 , H04L27/265 , H04L27/2652 , H04L27/2655 , H04L27/2657 , H04L27/2662 , H04L27/34 , H04L41/0213 , H04L41/064 , H04L41/0896 , H04L43/00 , H04L43/022 , H04L43/067 , H04L43/0811 , H04L43/0817 , H04L43/0823 , H04L43/0829 , H04L43/0847 , H04L43/0852 , H04L43/0858 , H04L43/0864 , H04L43/0882 , H04L43/16 , H04L2001/0093 , H04L2027/0036 , H04L2027/0057 , H04L2027/0067 , H04M7/006 , H04M9/027 , H04N7/17309 , H04N7/22 , H04N21/2221 , H04N21/2383 , H04N21/2385 , H04N21/2402 , H04N21/4382 , H04N21/6118 , H04N21/6137 , H04N21/6168 , H04W24/08 , Y02D50/40 , Y02D50/42
摘要： Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises: a receiver configured to receive a waveform comprising a plurality of spectrally overlapping carrier signals from at least two of a plurality of remotes, the carrier signals are modulated using an inverse Fourier transform; a transmitter; a processor coupled to the transmitter, the processor outputs data for transmission to the transmitter, the processor applies an inverse Fourier transform to the data provided to the transmitter; a controller programmed to instruct the transmitter to transmit timing adjustments to the at least two of the plurality of remotes, the timing adjustments instruct the at least two of the plurality of remotes to adjust transmission timing so that transmitted symbols associated with frames of a predetermined multiframe structure are received in sequence from the at least two of the plurality of remotes based on the structure.
摘要翻译： 提供了正交频分复用的系统和方法。 在一个实施例中，多载波调制解调器包括：接收机，被配置为从多个遥控器中的至少两个接收包括多个频谱重叠的载波信号的波形，所述载波信号使用逆傅里叶变换进行调制; 发射机 处理器耦合到发射机，处理器输出数据以传输到发射机，处理器对提供给发射机的数据应用逆傅里叶变换; 控制器，被编程为指示发射机向多个遥控器中的至少两个遥控器发送定时调整，定时调整指示多个遥控器中的至少两个遥控器调整发射定时，使得与预定多帧的帧相关联的传输符号 基于该结构，从多个遥控器中的至少两个接收序列的结构。
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