公开(公告)号：US20080049860A1

公开(公告)日：2008-02-28

申请号：US11927412

申请日：2007-10-29

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: H04L23/02 ,  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 method for communication comprises receiving baseband user data; modulating the baseband user data onto a first plurality of parallel streams based on a first modulation constellation; modulating non-user data onto a second plurality of parallel streams based on a second modulation constellation, wherein the first modulation constellation provides a higher bit-rate than the second modulation constellation; applying an inverse Fourier transform algorithm to the first plurality of parallel streams and the second plurality of parallel streams to produce a set of complex time-domain samples; and transmitting a radio frequency transmission signal based on the set of complex time-domain samples.

Abstract translation: 提供了正交频分复用的系统和方法。 在一个实施例中，一种用于通信的方法包括接收基带用户数据; 基于第一调制星座将基带用户数据调制到第一多个并行流上; 基于第二调制星座将非用户数据调制到第二多个并行流上，其中所述第一调制星座提供比所述第二调制星座更高的比特率; 对所述第一多个并行流和所述第二多个并行流应用逆傅立叶变换算法以产生一组复杂时域采样; 以及基于所述一组复杂时域样本发射射频发射信号。

公开(公告)号：US20080049856A1

公开(公告)日：2008-02-28

申请号：US11927479

申请日：2007-10-29

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph 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 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; and 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 multiplex upstream information onto an allocated number of the plurality of spectrally overlapping carrier signals based on an allocation instruction received be 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; 以及耦合到所述发射机的处理器，其中所述处理器输出要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送的数据应用逆傅立叶变换，所述处理器被编程为将上行信息复用到所述多个 基于接收到的分配指令的频谱重叠载波信号是接收机。

公开(公告)号：US20070263665A1

公开(公告)日：2007-11-15

申请号：US11782925

申请日：2007-07-25

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: H04J1/00

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 for contention-based bandwidth requests in orthogonal frequency division multiplexing (OFDM) systems are provided. In one embodiment, a bidirectional communication system comprises: a multipoint-to-point host; and a plurality of remotes communicatively coupled to the multipoint-to-point host through an OFDM waveform; wherein the multipoint-to-point host is configured to receive the OFDM waveform, the OFDM waveform comprising a plurality of tones transmitted by the plurality of remotes, wherein the plurality of tones are simultaneously received at the host from at least two of the plurality of remotes; wherein a first remote is configured to transmit a request for bandwidth to the host on a first tone of the plurality of tones, wherein access to the first tone is contention based; and wherein the multipoint-to-point host transmits information on at least one tone based on whether the host successfully receives the request for bandwidth from the first remote of the plurality of remotes.

Abstract translation: 提供了在正交频分复用（OFDM）系统中用于基于竞争的带宽请求的系统。 在一个实施例中，双向通信系统包括：多点对点主机; 以及通过OFDM波形通信地耦合到所述多点对主机的多个遥控器; 其中所述多点对点主机被配置为接收所述OFDM波形，所述OFDM波形包括由所述多个遥控器发送的多个音调，其中所述多个音调在所述主机处同时从所述多个 遥控器 其中第一遥控器被配置为在所述多个音调的第一音调上向所述主机发送对带宽的请求，其中对所述第一音调的访问是基于争用的; 并且其中所述多点对点主机基于所述主机是否从所述多个遥控器中的所述第一遥控器成功地接收到所述带宽请求，来发送关于至少一个音调的信息。

公开(公告)号：US20080082598A1

公开(公告)日：2008-04-03

申请号：US11927445

申请日：2007-10-29

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: G06F17/14

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 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.

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：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。

公开(公告)号：US20080063010A1

公开(公告)日：2008-03-13

申请号：US11927481

申请日：2007-10-29

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: H04N7/173 ,  H04K1/10 ,  H04J1/00

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 comprising: 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; and a controller programmed to multiplex both payload data and control data onto a first carrier of the spectrally overlapping carrier signals

Abstract translation: 提供了正交频分复用的系统和方法。 在一个实施例中，一种多载波调制解调器，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; 以及控制器，被编程为将有效载荷数据和控制数据复用到光谱重叠载波信号的第一载波上

公开(公告)号：US20080049604A1

公开(公告)日：2008-02-28

申请号：US11927460

申请日：2007-10-29

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: H04K1/10 ,  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 comprising: 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; and a controller programmed to instruct the transmitter to transmit a coarse timing adjustment followed by at least one secondary timing adjustment, wherein the secondary timing adjustment is a fine tuning adjustment with respect to the coarse timing adjustment.

Abstract translation: 提供了正交频分复用的系统和方法。 在一个实施例中，一种多载波调制解调器，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; 以及控制器，其被编程为指示所述发射机发送粗略定时调整，随后进行至少一个辅助定时调整，其中所述辅助定时调整是相对于所述粗略定时调整的微调调整。

公开(公告)号：US20080049599A1

公开(公告)日：2008-02-28

申请号：US11738045

申请日：2007-04-20

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brain Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brain Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph 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 for tone hopping in a multipoint-to-point orthogonal frequency division multiplexing (OFDM) communication system are provided. In one embodiment, a bidirectional communication system comprises: a first remote unit for communicating with a host unit using OFDM, the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration; the first remote unit including a modulator for modulating up to a plurality of tones with upstream information using orthogonal frequency division multiplexing, wherein the modulator is configured to adjust at least one characteristic of the plurality of tones such that when any tones are transmitted from the first remote unit and at least one other remote unit of the plurality of remote units, the orthogonality of the tones when received at the host unit is improved. The first remote unit switches modulation between tones of the plurality of tones to reduce the impact of using any corrupted tones.

Abstract translation: 提供了一种用于多点对点正交频分复用（OFDM）通信系统中的音频跳频的系统。 在一个实施例中，双向通信系统包括：第一远程单元，用于使用OFDM与主机单元通信，所述主机单元以多点对点配置通信耦合到多个远程单元; 所述第一远程单元包括用于使用正交频分多路复用来用上行信息调制多个音调的调制器，其中所述调制器被配置为调整所述多个音调的至少一个特性，使得当从所述第一 远程单元和多个远程单元中的至少一个其他远程单元，在主机单元处接收到的音调的正交性得到改善。 第一远程单元在多个音调的音调之间切换调制，以减少使用任何损坏的音调的影响。

公开(公告)号：US20070186258A1

公开(公告)日：2007-08-09

申请号：US11737948

申请日：2007-04-20

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: H04N7/173

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 tone allocation are provided. In one embodiment, a system comprises: a plurality of remote units and a host including a demodulator. Each remote transmits an upstream OFDM signal using a multiple access scheme to the host using an OFDM waveform. The host receives the upstream OFDM signals, the tones of the upstream signals substantially orthogonal when received at the host. Portions of upstream OFDM signals from at least two remotes arrive at the host at the same time. The host demodulates said portions. At least one remote transmits to the host using a first tone allocated by the host. The host sends an adjustment signal to the remote to adjust the timing of transmissions to improve orthogonality of the OFDM waveform. After the remote has begun transmission using the first tone but before the remote has completed its transmission, the host allocates to the remote a different tone.

Abstract translation: 提供音色分配系统。 在一个实施例中，系统包括：多个远程单元和包括解调器的主机。 每个远程使用OFDM波形向主机发送使用多址方案的上行OFDM信号。 主机接收上行OFDM信号，当在主机处接收时，上行信号的音调基本上是正交的。 来自至少两个遥控器的上行OFDM信号的部分同时到达主机。 主机解调所述部分。 至少一个远程使用主机分配的第一音调发送到主机。 主机向远端发送调整信号以调整传输的定时，以改善OFDM波形的正交性。 在遥控器已经开始使用第一音调传输之后但在远程完成传输之前，主机向远程分配不同的音调。

公开(公告)号：US20080056119A1

公开(公告)日：2008-03-06

申请号：US11927386

申请日：2007-10-29

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: H04L27/28 ,  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 comprising: a receiver configured to receive symbols from at least one of a plurality of spectrally overlapping carrier signals to produce an output; a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the receiver, wherein the processor applies a Fourier transform to the output from the receiver; and a controller programmed to instruct the transmitter to transmit at least one symbol comprising a ranging pattern when a predetermined instruction is 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，一种多载波调制解调器，包括：接收机，被配置为从多个频谱重叠的载波信号中的至少一个接收符号以产生输出; 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; 耦合到所述接收器的处理器，其中所述处理器对所述接收器的输出应用傅立叶变换; 以及控制器，其被编程为当接收机接收到预定指令时，指示发送器发送包括测距模式的至少一个符号。

公开(公告)号：US20080056398A1

公开(公告)日：2008-03-06

申请号：US11927468

申请日：2007-10-29

Applicant: Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

Inventor： Mark Dapper ,  Michael Geile ,  Terrance Hill ,  Harold Roberts ,  Brian Anderson ,  Jeffrey Brede ,  Mark Wadman ,  Robert Kirscht ,  James Herrmann ,  Michael Fort ,  Steven Buska ,  Jeff Solum ,  Debra Enfield ,  Darrell Berg ,  Thomas Smigelski ,  Thomas Tucker ,  Joe Hall ,  John Logajan ,  Somvay Boualouang ,  Heng Lou ,  Mark Elpers ,  Matt Downs ,  Tammy Ferris ,  Adam Opoczynski ,  David Russell ,  Calvin Nelson ,  Niranjan Samant ,  Joseph Chiappetta ,  Scott Sarnikowski

IPC: H04K1/10

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; and a controller programmed to instruct a transmitter to transmit one or more timing adjustments to at least one of the plurality of remote units based on detected variations in transmissions received from the at least one of the 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; 以及控制器，其被编程为基于从所述多个远程单元中的至少一个接收到的传输中检测到的变化来指示发射机向所述多个远程单元中的至少一个发送一个或多个定时调整。