公开(公告)号：US08355462B2

公开(公告)日：2013-01-15

申请号：US12608430

申请日：2009-10-29

Applicant: Bassel Beidas ,  Stan Kay ,  Neal Becker

Inventor： Bassel Beidas ,  Stan Kay ,  Neal Becker

IPC: H04L25/03

CPC classification number: H04L27/0008 ,  H04L27/183 ,  H04L27/2053 ,  H04L27/2604 ,  H04L27/2637 ,  H04L27/28 ,  H04L27/367

Abstract: The present invention provides a communication system for use with a first source signal and a second source signal. The first source signal is on a first channel and includes M symbols, where M is an integer greater than 1. The second source signal is on a second channel and includes X symbols, where X is an integer greater than 1. The first channel is different from the second channel. The communication system includes a first modulator unit, a second modulator unit and an adder. The first modulator unit can generate a first modulated signal based on the first source signal and includes a first inter-symbol distortion estimating unit and a first stage predistortion unit. The second modulator unit can generate a second modulated signal based on the second source signal and includes a second inter-symbol distortion estimating unit and a predistortion unit. The adder can generate an added signal based on the first modulated signal and the second modulated signal. The first inter-symbol distortion estimating unit can generate a distorted symbol vector based on an estimate of a distortion of the first through (a−1)-th symbols and an estimate of a distortion of the (a+1)-th through M-th symbols, where 1≦a≦M. The first stage predistortion unit is operable to generate a predistorted symbol ã based on the symbol a of the first plurality of symbols and the distorted symbol vector. Further, a receiver unit can cancel interference in the received signals to account for adjacent channel interference.

Abstract translation: 本发明提供一种与第一源信号和第二源信号一起使用的通信系统。 第一源信号在第一信道上并且包括M个符号，其中M是大于1的整数。第二源信号在第二信道上并且包括X个符号，其中X是大于1的整数。第一信道是 不同于第二通道。 通信系统包括第一调制器单元，第二调制器单元和加法器。 第一调制器单元可以基于第一源信号产生第一调制信号，并且包括第一符号间失真估计单元和第一级预失真单元。 第二调制器单元可以基于第二源信号生成第二调制信号，并且包括第二符号间失真估计单元和预失真单元。 加法器可以基于第一调制信号和第二调制信号产生相加的信号。 第一符号间失真估计单元可以基于第一到第（a-1）个符号的失真的估计和第（a + 1）至第M个符号的失真的估计来生成失真的符号向量 第一个符号，其中1＆nlE; a＆nlE; M。 第一级预失真单元可操作以基于第一多个符号的符号a和失真的符号向量生成预失真符号ã。 此外，接收机单元可以消除接收到的信号中的干扰以解决相邻信道干扰。

公开(公告)号：US09264675B2

公开(公告)日：2016-02-16

申请号：US13323467

申请日：2011-12-12

Applicant: Yezdi Antia ,  Dave Roos ,  Neal Becker

Inventor： Yezdi Antia ,  Dave Roos ,  Neal Becker

IPC: H04L12/54 ,  H04N7/20

CPC classification number: H04N7/20

Abstract: A system for a multiplexing scheme for wideband signals in a communications system is provided. A codeblock of a multiplexed datastream is decoded. The codeblock includes a flag indicating whether the codeblock contains a timeplan, signifying a multiplexing structure of the datastream. A determination is made whether the flag indicates the presence of the timeplan, and, if so, the timeplan is acquired. In response to a determination that the codeblock does not contain the timeplan, a subsequent codeblock is determined, and decoded. Each codeblock includes an indicator of a sequence position of the codeblock within a group of codeblocks of the datastream. The subsequent codeblock is determined based on one or more of a decode rate of the processor device and the sequence position indicator. A determination is made whether the flag of the subsequent codeblock indicates the presence of the timeplan, and, if so, the timeplan is acquired.

Abstract translation: 提供了一种用于通信系统中的宽带信号的复用方案的系统。 多路复用数据流的码块被解码。 代码块包括指示代码块是否包含时钟表的标志，表示数据流的复用结构。 确定标志是否表示是否存在timeplan，如果是，则获取该timeplan。 响应于确定码块不包含时间延迟，确定并解码后续码块。 每个码块包括在数据流的一组码块内的码块的序列位置的指示符。 基于处理器设备的解码速率和序列位置指示符中的一个或多个确定随后的码块。 确定后续代码块的标志是否指示timeplan的存在，如果是，则获取该timeplan。

公开(公告)号：US20110258669A1

公开(公告)日：2011-10-20

申请号：US13086702

申请日：2011-04-14

Applicant: Yezdi Antia ,  David Roos ,  Neal Becker

Inventor： Yezdi Antia ,  David Roos ,  Neal Becker

IPC: H04N7/20

CPC classification number: H04N7/20

Abstract: A transmitter is provided for use with a first input signal and a second input signal. The transmitter includes a first modulating portion, a second modulating portion and a multiplexing portion. The first modulating portion can output a first plurality of code blocks based on the first input signal, wherein each of the first plurality of code blocks has a first sequence number associated therewith and is modulated with a first modulation scheme. The second modulating portion can output a second plurality of code blocks based on the second input signal, wherein each of the second plurality of code blocks has a second sequence number associated therewith and is modulated with a second modulation scheme, and wherein the second modulation scheme is different than the first modulation scheme. The multiplexing portion can a third plurality of code blocks based on the first plurality of code blocks, the second plurality of code blocks and planning code block. The planning code block associates each of the third plurality of code blocks with a respective one of the first plurality of code blocks and the second plurality of code blocks.

Abstract translation: 提供用于与第一输入信号和第二输入信号一起使用的发射器。 发射机包括第一调制部分，第二调制部分和复用部分。 第一调制部分可以基于第一输入信号输出第一多个码块，其中第一多个码块中的每一个具有与之相关联的第一序列号并且利用第一调制方案进行调制。 第二调制部分可以基于第二输入信号输出第二多个码块，其中第二多个码块中的每一个具有与之相关联的第二序列号，并用第二调制方案进行调制，并且其中第二调制方案 与第一调制方案不同。 复用部分可以基于第一多个代码块，第二多个代码块和规划代码块来构成第三多个代码块。 规划代码块将第三多个代码块中的每一个与第一多个代码块和第二多个代码块中的相应代码块相关联。

公开(公告)号：US20110033016A1

公开(公告)日：2011-02-10

申请号：US12893843

申请日：2010-09-29

Applicant: Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

Inventor： Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

IPC: H04L7/00

CPC classification number: H04L27/2272 ,  H04L7/048 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0093 ,  H04L2027/0095

Abstract: An approach is provided for supporting carrier synchronization in a digital broadcast and interactive system. A carrier synchronization module receives one or more signals representing a frame that includes one or more overhead fields (e.g., preamble and optional pilot blocks and one or multiple segments separated by pilot blocks). The module estimates carrier frequency and phase on a segment by segment basis and tracks frequency between segments. Carrier phase of the signal is estimated based upon the overhead field. Estimates carrier phase of random data field are determined based upon the estimated phase values from the overhead fields, and upon both the past and future data signals. Further, the frequency of the signal is estimated based upon the overhead fields and/or the random data field. The above arrangement is particularly suited to a digital satellite broadcast and interactive system.

Abstract translation: 提供了一种用于在数字广播和交互系统中支持载波同步的方法。 载波同步模块接收表示包括一个或多个开销字段（例如，前导码和可选导频块以及由导频块分隔的一个或多个片段）的帧的一个或多个信号。 该模块逐段估计载波频率和相位，并跟踪段之间的频率。 信号的载波相位基于开销字段来估计。 基于来自架空领域的估计相位值以及过去和未来数据信号来估计随机数据字段的载波相位。 此外，基于开销字段和/或随机数据字段来估计信号的频率。 上述布置特别适用于数字卫星广播和交互式系统。

公开(公告)号：US08619974B2

公开(公告)日：2013-12-31

申请号：US12647096

申请日：2009-12-24

Applicant: Russell Fang ,  Mustafa Eroz ,  Neal Becker

Inventor： Russell Fang ,  Mustafa Eroz ,  Neal Becker

IPC: H04L29/06

CPC classification number: H03M13/2957 ,  H03M13/2903 ,  H04B1/707

Abstract: A spread scrambled multiple access (SSCMA) scheme is described. A first encoded bit stream of a first terminal is scrambled according to a first scrambling signature. A second encoded bit stream of a second terminal is scrambled according to a second scrambling signature. The first scrambled bit stream is spread to match a communication channel bandwidth. The second scrambled bit stream is spread to match the communication channel bandwidth.

Abstract translation: 描述了扩频加扰多址（SSCMA）方案。 根据第一加扰签名对第一终端的第一编码比特流进行加扰。 根据第二加扰签名对第二终端的第二编码比特流进行加扰。 第一加扰比特流被传播以匹配通信信道带宽。 第二加扰比特流被扩展以匹配通信信道带宽。

公开(公告)号：US20120198502A1

公开(公告)日：2012-08-02

申请号：US13438570

申请日：2012-04-03

Applicant: Liming Qin ,  Marwan Adas ,  Prachi Raikar ,  David Roos ,  Yezdi Antia ,  Neal Becker

Inventor： Liming Qin ,  Marwan Adas ,  Prachi Raikar ,  David Roos ,  Yezdi Antia ,  Neal Becker

IPC: H04N21/60

CPC classification number: H04N21/6143 ,  H03M13/1165 ,  H04N7/20 ,  H04N21/236 ,  H04N21/238 ,  H04N21/2381 ,  H04N21/2389

Abstract: A receiver is used with third code blocks based on first code blocks, second code blocks, and a planning code block. The first code blocks are associated with a first sequence number and modulated with a first modulation scheme. The second code blocks are associated with a second sequence number and modulated with a second modulation scheme. The planning code block associates the third code blocks with the first code blocks and the second code blocks. The receiver includes a de-multiplexing portion, which includes a code block selector and a look up table, that outputs a de-multiplexed signal based on the third code blocks. The code block selector selects a code block from the third code blocks to output as the de-multiplexed signal based on entries in the look up table. The receiver also includes a recovery portion that outputs received code blocks based on the de-multiplexed signal.

Abstract translation: 基于第一代码块，第二代码块和规划代码块的第三代码块使用接收器。 第一码块与第一序列号相关联，并用第一调制方案进行调制。 第二码块与第二序列号相关联，并用第二调制方案进行调制。 规划代码块将第三代码块与第一代码块和第二代码块相关联。 接收机包括解复用部分，其包括代码块选择器和查找表，其基于第三代码块输出解复用信号。 代码块选择器从第三代码块中选择代码块，作为基于查找表中的条目的解复用信号输出。 接收机还包括基于解复用信号输出接收码块的恢复部分。

公开(公告)号：US20090028324A1

公开(公告)日：2009-01-29

申请号：US12056144

申请日：2008-03-26

Applicant: Mustafa Eroz ,  Lin-Nan Lee ,  Lakshmi Iyer ,  Neal Becker

Inventor： Mustafa Eroz ,  Lin-Nan Lee ,  Lakshmi Iyer ,  Neal Becker

IPC: H04L9/00

CPC classification number: H03M13/2957 ,  H03M13/2903

Abstract: A multiple access scheme is described. A first bit stream is scrambled from a first terminal according to a first scrambling signature. A second bit stream is scrambled from a second terminal according to a second scrambling signature, wherein the first bit stream and the second bit stream are encoded using a low rate code. The first scrambling signature and the second scrambling signature are assigned, respectively, to the first terminal and the second terminal to provide a multiple access scheme.

Abstract translation: 描述多址方案。 根据第一加扰签名从第一终端对第一比特流进行加扰。 根据第二加扰签名从第二终端对第二比特流进行加扰，其中使用低速率码对第一比特流和第二比特流进行编码。 分别将第一加扰签名和第二加扰签名分配给第一终端和第二终端以提供多址方案。

公开(公告)号：US06985523B2

公开(公告)日：2006-01-10

申请号：US10043775

申请日：2002-01-10

Applicant: Richard Sims ,  Richard Clewer ,  Neal Becker ,  Yezdi Antia ,  J. Mark Steber

Inventor： Richard Sims ,  Richard Clewer ,  Neal Becker ,  Yezdi Antia ,  J. Mark Steber

IPC: H03K5/159

CPC classification number: H04L25/03133 ,  H04B7/18513 ,  H04L2025/03401 ,  H04L2025/03477 ,  H04L2025/03617

Abstract: An apparatus for providing automatic gain control for use in a satellite terminal of a satellite communication system capable of transmitting a plurality of different modes of data. The apparatus includes a demodulator circuit having an analog to digital converter; a first variable attenuator having an attenuation value set on the basis of a measured power level of a predetermined data signal; and a second variable attenuator having an attenuation value set on the basis of the mode of data being received by the satellite terminal, where each of the data modes have a corresponding predetermined attenuation value associated therewith which is utilized as the attenuation value of the second variable attenuator when the satellite terminal receives the data mode.

公开(公告)号：US20130223558A1

公开(公告)日：2013-08-29

申请号：US13407684

申请日：2012-02-28

Applicant: Neal Becker

Inventor： Neal Becker

IPC: H04L25/49 ,  H04B15/00

CPC classification number: H04B1/709 ,  H04J13/10 ,  H04L27/2663 ,  H04L27/2675 ,  H04L27/2692

Abstract: A system and method of construction of unique word sets together with an efficient method of implementing correlation with the members of the set is presented. The set of UWs is constructed by breaking a UW sequence in to equal length segments, and then multiplying this vector by an orthogonal matrix. First an arbitrary vector U is chosen of length K for a set of N UWs. Then a matrix H of size N×N is chosen. The columns of H are then repeated L times to form a matrix H′. The set of N UW consists of the rows of H′UT. N sub-correlations of the N segments of the vector U with the segments of the (suitably delayed) received signal is performed at the receiver. Then the N different outputs are obtained as Z=HCT, where C=[C0 . . . CN-1] is the vector of correlated outputs. The receiver only requires N correlators, each of length L, instead of length K, which provides a less complex and more efficient solution for detection of UW sets.

Abstract translation: 提出了一种构建独特单词集的系统和方法以及与集合成员实现相关性的有效方法。 UW集合通过将UW序列分割成相等的长度段来构造，然后将该向量乘以正交矩阵。 首先，对于一组N个UW，选择任意向量U的长度K。 然后选择大小为N×N的矩阵H. 然后将H列重复L次以形成矩阵H'。 N UW组由H'UT的行组成。 在接收机处执行向量U的N个段与（适当延迟的）接收信号的段的N个子相关。 然后得到N个不同的输出为Z = HCT，其中C = [C0。 。 。 CN-1]是相关输出的向量。 接收机仅需要N个相关器，每个长度为L，而不是长度K，这为检测UW组提供了一种较不复杂和更有效的解决方案。

公开(公告)号：US08275081B2

公开(公告)日：2012-09-25

申请号：US12893843

申请日：2010-09-29

Applicant: Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

Inventor： Yimin Jiang ,  Feng-Wen Sun ,  Lin-Nan Lee ,  Neal Becker

IPC: H04L7/00

CPC classification number: H04L27/2272 ,  H04L7/048 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0093 ,  H04L2027/0095

Abstract: An approach is provided for supporting carrier synchronization in a digital broadcast and interactive system. A carrier synchronization module receives one or more signals representing a frame that includes one or more overhead fields (e.g., preamble and optional pilot blocks and one or multiple segments separated by pilot blocks). The module estimates carrier frequency and phase on a segment by segment basis and tracks frequency between segments. Carrier phase of the signal is estimated based upon the overhead field. Estimates carrier phase of random data field are determined based upon the estimated phase values from the overhead fields, and upon both the past and future data signals. Further, the frequency of the signal is estimated based upon the overhead fields and/or the random data field. The above arrangement is particularly suited to a digital satellite broadcast and interactive system.

Abstract translation: 提供了一种用于在数字广播和交互系统中支持载波同步的方法。 载波同步模块接收表示包括一个或多个开销字段（例如，前导码和可选导频块以及由导频块分隔的一个或多个片段）的帧的一个或多个信号。 该模块逐段估计载波频率和相位，并跟踪段之间的频率。 信号的载波相位基于开销字段来估计。 基于来自架空领域的估计相位值以及过去和未来数据信号来估计随机数据字段的载波相位。 此外，基于开销字段和/或随机数据字段来估计信号的频率。 上述布置特别适用于数字卫星广播和交互式系统。