公开(公告)号：US20090080554A1

公开(公告)日：2009-03-26

申请号：US12272542

申请日：2008-11-17

Applicant: 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

Inventor： 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: H04J11/00

CPC classification number: 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

Abstract: Systems and methods for OFDM tone allocation are provided. In one embodiment, an end-user communication device comprises: a first remote unit for communicating with a host unit using orthogonal frequency division multiplexing (OFDM), the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration, wherein OFDM waveform from distinct remote units of the plurality of remote units combine to a unified OFDM waveform at the host unit. The first remote unit is configured to transmit up to a plurality of tones, the up to a plurality of tones modulated with upstream information using OFDM. The first remote unit is configured to determine when bandwidth is needed for upstream transmission to the host unit. The first remote unit is configured to transmit a request for bandwidth to the host unit on a first tone of the plurality of tones, wherein access to the first tone is contention-based.

Abstract translation: 提供了OFDM音调分配的系统和方法。 在一个实施例中，终端用户通信设备包括：第一远程单元，用于使用正交频分复用（OFDM）与主机单元通信，所述主机单元以多点对点配置通信地耦合到多个远程单元 其中来自多个远程单元的不同远程单元的OFDM波形在主机单元处组合成统一的OFDM波形。 第一远程单元被配置为发送多达多个音调，最多多个音调通过上行信息使用OFDM调制。 第一远程单元被配置为确定上行传输到主机单元何时需要带宽。 第一远程单元被配置为以多个音调的第一音调向主机单元发送带宽请求，其中对第一音调的访问是基于争用的。

公开(公告)号：US20080240410A1

公开(公告)日：2008-10-02

申请号：US11927498

申请日：2007-10-29

Applicant: 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

Inventor： 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: H04M1/00

CPC classification number: 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

Abstract: 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 remote units, wherein the plurality of 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 to the transmitter, wherein the processor applies an inverse Fourier transform algorithm to the data provided to the transmitter; and a controller programmed to analyze a training signal received from a first remote unit and adjust receiver equalizer parameters based on the training signal.

Abstract translation: 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，被配置为从多个远程单元中的至少两个接收包括多个频谱重叠的载波信号的波形，其中所述多个频谱重叠的载波信号使用逆 傅立叶变换算法; 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传输到所述发射机的数据，其中所述处理器对提供给所述发射机的数据应用傅里叶逆变换算法; 以及控制器，被编程为分析从第一远程单元接收的训练信号，并且基于训练信号调整接收机均衡器参数。

公开(公告)号：US20080225692A1

公开(公告)日：2008-09-18

申请号：US11927453

申请日：2007-10-29

Applicant: 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

Inventor： 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: H04J11/00

CPC classification number: 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

Abstract: Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises:a receiver configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals; 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 programmed to encode upstream information using a forward error correction algorithm based on forward error correction parameters received by the receiver.

Abstract translation: 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：被配置为从多个频谱重叠的载波信号中的至少一个去调制符号的接收机; 发射机，被配置为将符号调制到多个频谱重叠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; 处理器被编程为使用基于由接收器接收的前向纠错参数的前向纠错算法对上行信息进行编码。

公开(公告)号：US06535715B2

公开(公告)日：2003-03-18

申请号：US09396308

申请日：1999-09-15

Applicant: Mark J. Dapper ,  Michael J. Geile

Inventor： Mark J. Dapper ,  Michael J. Geile

IPC: H04J1100

CPC classification number: 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

Abstract: A communication system is described. The communication system includes a distribution network between a head end terminal and at least one remote unit. The head end terminal receives upstream telephony and control data modulated on a plurality of orthogonal carriers in a frequency bandwidth over the distribution network. The head end terminal includes a polyphase filter that filters at least the upstream telephony data to provide ingress protection for the modulated orthogonal carriers. The communication further includes a service unit multicarrier modem associated with the at least one remote unit and operatively connected to the distribution network for modulating at least upstream telephony information on at least one carrier orthogonal at the head end terminal to at least one other carrier in the frequency bandwidth.

Abstract translation: 描述通信系统。 通信系统包括在头端终端和至少一个远程单元之间的分配网络。 头端终端在分配网络上接收上行电话和在频带上的多个正交载波上调制的数据。 头端终端包括多相滤波器，至少对上游电话数据进行滤波，以提供调制正交载波的入口保护。 所述通信还包括与所述至少一个远程单元相关联并可操作地连接到所述分配网络的服务单元多载波调制解调器，用于至少将在所述头端终端正交的至少一个载波上的上行电话信息调制到所述至少一个其他载波 频率带宽。

公开(公告)号：US06292651B1

公开(公告)日：2001-09-18

申请号：US09373036

申请日：1997-07-23

Applicant: Mark J. Dapper ,  Michael J. Geile ,  Harold A. Roberts ,  Jeffrey Brede ,  Mark S. Wadman ,  Robert J. Kirscht ,  James J. Herrmann ,  Michael J. Fort

Inventor： Mark J. Dapper ,  Michael J. Geile ,  Harold A. Roberts ,  Jeffrey Brede ,  Mark S. Wadman ,  Robert J. Kirscht ,  James J. Herrmann ,  Michael J. Fort

IPC: H04H100

CPC classification number: 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

Abstract: A multi-point to point communication system. The system includes a distribution network between a head end terminal and a plurality of remote units, the head end terminal for downstream transmission of downstream control data and downstream telephony information in a first frequency bandwidth over the distribution network and for receipt of upstream telephony information and upstream control data in a second frequency bandwidth over the distribution network. The head end terminal including a head end multicarrier modem means for modulating at least downstream telephony information on a plurality of orthogonal carriers in a plurality of regions of the first frequency bandwidth and for demodulating at least upstream telephony information modulated on a plurality of orthogonal carriers of a plurality of regions in the second frequency bandwidth. The head end controller means operatively connected to the head end multicarrier modem means 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 also includes a plurality of service unit modem means, each service unit modem means associated with at least one remote unit and operatively connected to the distribution network for upstream transmission of upstream telephony information and upstream control data in one of the plurality of regions of the second frequency bandwidth and for receipt of the downstream control data and downstream telephony information in one of the plurality of regions in the first frequency bandwidth.

Abstract translation: 多点到点通信系统。 该系统包括头端终端和多个远程单元之间的分配网络，用于下游控制数据下游传输的头端终端和分布网络上的第一频带宽度中的下行电话信息，以及用于接收上行电话信息，以及 在分配网络上的第二频带中的上游控制数据。 头端终端包括头端多载波调制解调器装置，用于在第一频带宽度的多个区域中对至少下行电话信息调制多个正交载波进行调制，并且至少解调在多个正交载波上调制的上行电话信息 第二频带中的多个区域。 头端控制器装置可操作地连接到头端多载波调制解调器装置，用于控制下游电话信息和下游控制数据的传输，并用于控制上行控制数据和上游电话信息的接收。 该系统还包括多个服务单元调制解调器装置，每个服务单元调制解调器装置与至少一个远程单元相关联并且可操作地连接到分配网络，用于上游传输上游电话信息和上游控制数据，其中多个区域 所述第二频率带宽以及用于在所述第一频率带宽中的所述多个区域之一中接收所述下游控制数据和下游电话信息。

公开(公告)号：US5809065A

公开(公告)日：1998-09-15

申请号：US603768

申请日：1996-02-20

Applicant: Mark J. Dapper ,  Barry W. Carlin ,  Michael J. Geile

Inventor： Mark J. Dapper ,  Barry W. Carlin ,  Michael J. Geile

IPC: H03D5/00 ,  H04H20/36 ,  H04L1/20 ,  H04L27/00 ,  H04L25/00

CPC classification number: H04L27/0008 ,  H03D5/00 ,  H04H20/36 ,  H04L1/20 ,  H04H20/20 ,  H04H2201/186

Abstract: A system and method are provided for reducing perceived distortion in an output audio signal derived from an amplitude modulated compatible digital broadcast signal having an analog portion and a digital portion. The digital portion of this signal is demodulated to produce a demodulated digital signal and the analog portion of the signal is demodulated to produce a demodulated analog signal. The noise in the demodulated digital signal is measured and an estimate of the signal-to-noise ratio is derived. This estimated signal-to-noise ratio is compared with a threshold level which is set at the minimum acceptable signal quality for the digital signal. Based upon the estimated signal-to-noise ratio, a switch directs either the analog derived audio output or the digitally derived audio output as the system output signal.

Abstract translation: 提供了一种系统和方法，用于减少从具有模拟部分和数字部分的幅度调制兼容数字广播信号导出的输出音频信号中的感知失真。 该信号的数字部分被解调以产生解调的数字信号，并且信号的模拟部分被解调以产生解调的模拟信号。 测量解调数字信号中的噪声，得出信噪比的估计。 将该估计的信噪比与对于数字信号设置为最小可接受信号质量的阈值电平进行比较。 基于估计的信噪比，开关将模拟导出的音频输出或数字导出的音频输出指导为系统输出信号。

公开(公告)号：US5764706A

公开(公告)日：1998-06-09

申请号：US636044

申请日：1996-04-22

Applicant: Barry W. Carlin ,  Mark J. Dapper ,  Michael J. Geile

Inventor： Barry W. Carlin ,  Mark J. Dapper ,  Michael J. Geile

IPC: H04J11/00 ,  H04H20/36 ,  H04H20/49 ,  H04H40/27 ,  H04L5/02 ,  H04L7/00 ,  H04L27/26 ,  H04L27/14

CPC classification number: H04H20/36 ,  H04H20/49 ,  H04H40/27 ,  H04L27/2602 ,  H04L27/2656 ,  H04L27/2662 ,  H04L5/023 ,  H04H2201/186 ,  H04H2201/20

Abstract: In a broadcast system having a complex waveform of digital and analog segments, frame timing is recovered and the frame synchronous power of the digital portion of the composite AM compatible Digital Audio Broadcast (DAB) waveform is measured by examining a portion of the signal. The frame timing necessary for proper demodulation is recovered from the received signal, and a signal power measurement for scaling is provided. The composite AM compatible DAB waveform is produced by a modulation method in which a digital representation of an audio signal is encoded together with an analog amplitude modulated (AM) signal and transmitted simultaneously in the same frequency channel.

Abstract translation: 在具有数字和模拟段的复杂波形的广播系统中，恢复帧定时，并通过检查信号的一部分来测量复合AM兼容数字音频广播（DAB）波形的数字部分的帧同步功率。 从接收信号中恢复正确解调所需的帧定时，并提供用于缩放的信号功率测量。 复合AM兼容DAB波形通过调制方法产生，其中音频信号的数字表示与模拟幅度调制（AM）信号一起编码并在同一频道中同时传输。

公开(公告)号：US20090080552A1

公开(公告)日：2009-03-26

申请号：US12272529

申请日：2008-11-17

Applicant: 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

Inventor： 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: H04L27/28

CPC classification number: 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

Abstract: Systems for multiple use subchannels are provided. In one embodiment, a bidirectional communication system comprises: a first remote unit for communicating with a host using OFDM, the host communicatively coupled to a plurality of remote units in a multipoint-to-point configuration. The first remote unit is configured to transmit up to a plurality of tones, the up to a plurality of tones modulated with upstream information using OFDM, the first remote unit including a modulator for modulating the up to a plurality of tones using OFDM. The modulator is configured to adjust a carrier frequency and timing of the plurality of tones such that when any tones are transmitted from the first remote unit and at least one other remote unit, the orthogonality of the tones when received at the host unit is improved. Both control data and payload data are transmitted on a first tone of the plurality of tones.

Abstract translation: 提供了多用途子信道的系统。 在一个实施例中，双向通信系统包括：用于使用OFDM与主机通信的第一远程单元，所述主机以多点对点配置通信地耦合到多个远程单元。 第一远程单元被配置为发送多达多个音调，多达多个音调通过上行信息使用OFDM调制，第一远程单元包括调制器，用于使用OFDM调制多达多个音调。 调制器被配置为调整多个音调的载波频率和定时，使得当从第一远程单元和至少一个其他远程单元发送任何音调时，提高在主机单元处接收时的音调的正交性。 控制数据和有效载荷数据两者都以多个音调的第一音调发送。

公开(公告)号：US20080253435A1

公开(公告)日：2008-10-16

申请号：US11927491

申请日：2007-10-29

Applicant: 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

Inventor： 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: H04B1/38

CPC classification number: 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

Abstract: 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 remote units, wherein the plurality of spectrally overlapping carrier signals are modulated using an inverse Fourier transform algorithm; and a processor coupled to the receiver, wherein the processor applies a Fourier transform algorithm to demultiplex upstream data modulated onto the waveform by the at least two of a plurality of remote units

Abstract translation: 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被配置为从多个远程单元中的至少两个接收包括多个频谱重叠的载波信号的波形的接收机，其中使用反傅立叶变换调制多个频谱重叠的载波信号 变换算法; 以及耦合到所述接收器的处理器，其中所述处理器应用傅里叶变换算法来解复用多个远程单元中的所述至少两个来调制到所述波形上的上行数据

公开(公告)号：US20080240214A1

公开(公告)日：2008-10-02

申请号：US11927495

申请日：2007-10-29

Applicant: 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

Inventor： 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: H04B1/38 ,  H04L27/28

CPC classification number: 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

Abstract: 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 remote units, wherein the plurality of 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 to the transmitter, wherein the processor applies an inverse Fourier transform algorithm to the data provided to the transmitter; a controller programmed to instruct the transmitter to transmit a predetermined identifier on at least one of the spectrally overlapping carrier signals, the predetermined identifier identifying to a first remote unit a range of the plurality of spectrally overlapping carrier signals for the first remote unit to receive control information.

Abstract translation: 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，被配置为从多个远程单元中的至少两个接收包括多个频谱重叠的载波信号的波形，其中所述多个频谱重叠的载波信号使用逆 傅立叶变换算法; 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传输到所述发射机的数据，其中所述处理器对提供给所述发射机的数据应用傅里叶逆变换算法; 控制器，其被编程为指示发射机在至少一个频谱重叠的载波信号上发送预定的标识符，该预定标识符向第一远程单元标识多个频谱重叠的载波信号的范围，用于第一远程单元接收控制 信息。