公开(公告)号：US20110200088A1

公开(公告)日：2011-08-18

申请号：US12448187

申请日：2006-12-14

申请人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

发明人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

IPC分类号： H04B17/00 ,  H04L27/28

CPC分类号： H04L1/0025 ,  H04L1/0003 ,  H04L1/1607

摘要： A method and apparatus for improving performance in communication systems is provided. In one implementation, information is accessed indicating the quality of at least one communication channel. Based on the accessed information, a modulation scheme is indicated for sending data over the channel encoded with a rateless code. Various different information relating to the communication channel can be used to determine a quality metric for the channel.

摘要翻译： 提供了一种用于提高通信系统性能的方法和装置。 在一个实现中，访问指示至少一个通信信道的质量的信息。 基于访问的信息，指示用于通过用无编码代码编码的信道发送数据的调制方案。 可以使用与通信信道有关的各种不同的信息来确定信道的质量度量。

公开(公告)号：US20100020782A1

公开(公告)日：2010-01-28

申请号：US12448118

申请日：2006-12-14

申请人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

发明人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

IPC分类号： H04B7/216

CPC分类号： H04L1/188 ,  H04L1/0003 ,  H04L1/0025 ,  H04L1/1671 ,  H04L1/1848 ,  H04L1/1877

摘要： A method and apparatus for improving performance in communication systems is provided. In order to maintain the real time constraints of the communication systems, time intervals and indication signals are used in various implementations to indicate and/or force subsequent transmissions of encoded data. An indication signal can include, for example, modulation modification information for subsequent transmissions. In various other implementations, a quality metric is computed for the communication channel and is used to provide modified modulation scheme information to be subsequently used on the communication channel.

摘要翻译： 提供了一种用于提高通信系统性能的方法和装置。 为了保持通信系统的实时约束，在各种实现中使用时间间隔和指示信号来指示和/或强制编码数据的后续传输。 指示信号可以包括例如用于后续传输的调制修改信息。 在各种其他实现中，为通信信道计算质量度量，并且用于提供随后在通信信道上使用的修改的调制方案信息。

公开(公告)号：US20090249160A1

公开(公告)日：2009-10-01

申请号：US11921494

申请日：2005-06-27

申请人： Wen Gao ,  Joshua Lawrence Koslov

发明人： Wen Gao ,  Joshua Lawrence Koslov

IPC分类号： H03M13/29 ,  G06F11/10

CPC分类号： H03M13/2975 ,  H03M13/1105 ,  H03M13/1128 ,  H03M13/2906

摘要： There are provided a method, an apparatus and a computer program product for reducing power consumption in an iterative decoder, for example, for low-density parity-check (LDPC) codes or turbo codes. The apparatus includes a memory device and an iteration termination device. The memory device is for storing a decoded codeword for a current iteration, for each iteration of the iterative decoder prior to a maximum number of iterations. The iteration termination device is for comparing the decoded codeword for the current iteration to a previously stored decoded codeword for the previous iteration, incrementing a confidence value when the decoded codeword for the current iteration matches the previously stored decoded codeword for the previous iteration, and terminating further iterations of the iterative decoder when the confidence value exceeds a pre-specified threshold value.

摘要翻译： 提供了一种用于降低迭代解码器中的功率消耗的方法，装置和计算机程序产品，例如用于低密度奇偶校验（LDPC）码或turbo码。 该装置包括存储装置和迭代终止装置。 存储器件用于存储用于当前迭代的解码码字，用于迭代解码器在最大迭代次数之前的每次迭代。 迭代终止装置用于将用于当前迭代的解码码字与用于前一次迭代的先前存储的解码码字进行比较，当当前迭代的解码码字与先前存在的解码码字相匹配时，增加置信度值， 当置信度值超过预定阈值时迭代解码器的进一步迭代。

公开(公告)号：US20090129448A1

公开(公告)日：2009-05-21

申请号：US12087817

申请日：2006-01-15

申请人： Joshua Lawrence Koslov ,  Wen Gao

发明人： Joshua Lawrence Koslov ,  Wen Gao

IPC分类号： H04B1/707 ,  H04B7/216 ,  H04J13/00

CPC分类号： H04B1/70756 ,  G06F7/582 ,  H04B1/7117 ,  H04J13/10

摘要： A wireless WCDMA (wideband code division multiple access) receiver comprises a plurality of fingers, a mask engine, a plurality of delay mask scrambling code generators and a maximal ratio combiner. Each finger process a path of a received multi-path signal having an associated delay. For each of the delays, the mask engine provides a corresponding delay mask to a delay mask scrambling code generator, which then provides a scrambling code with the appropriate offset, or delay, to the requisite finger. Output signals from the fingers are provided to the maximal ratio combiner.

摘要翻译： 无线WCDMA（宽带码分多址）接收机包括多个指状物，掩模引擎，多个延迟掩码扰码生成器和最大比组合器。 每个手指处理具有相关延迟的接收的多路径信号的路径。 对于每个延迟，掩码引擎向延迟掩码扰码发生器提供相应的延迟掩码，延迟掩码扰码产生器随后向必需的手指提供具有适当偏移或延迟的扰码。 来自手指的输出信号被提供给最大比组合器。

公开(公告)号：US20090052588A1

公开(公告)日：2009-02-26

申请号：US12223752

申请日：2006-06-05

申请人： Wen Gao ,  Paul Gothard Knutson ,  Joshua Lawrence Koslov

发明人： Wen Gao ,  Paul Gothard Knutson ,  Joshua Lawrence Koslov

IPC分类号： H04L27/06

CPC分类号： H04N21/4345 ,  H04N5/4401 ,  H04N21/4524

摘要： A Wireless Regional Area Network (WRAN) receiver comprises a transceiver for communicating with a wireless network over one of a number of channels, and an Advanced Television Systems Committee (ATSC) signal detector for use in forming a supported channel list comprising those ones of the number of channels upon which an ATSC signal was not detected, wherein the ATSC signal detector includes a filter matched to a PN63 sequence of an ATSC signal for filtering a received signal on one of the number of channels for providing a filtered signal for use in determining if the received signal is an ATSC signal. The ATSC signal detector can be a coherent or a non-coherent ATSC signal detector.

摘要翻译： 无线区域网络（WRAN）接收机包括用于通过多个信道之一与无线网络进行通信的收发机，以及用于形成支持的频道列表的高级电视系统委员会（ATSC）信号检测器，其包括 没有检测到ATSC信号的信道数量，其中ATSC信号检测器包括与ATSC信号的PN63序列匹配的滤波器，用于在多个信道之一上滤波接收信号，以提供用于确定的滤波信号 如果接收到的信号是ATSC信号。 ATSC信号检测器可以是相干或非相干ATSC信号检测器。

公开(公告)号：US20080170640A1

公开(公告)日：2008-07-17

申请号：US10567946

申请日：2004-07-15

申请人： Wen Gao ,  Joshua Lawrence Koslov ,  Kumar Ramaswamy

发明人： Wen Gao ,  Joshua Lawrence Koslov ,  Kumar Ramaswamy

IPC分类号： H04L27/34 ,  H04L27/12 ,  H03C3/00

CPC分类号： H04L27/3488

摘要： There is provided a method for hierarchical modulation relating to a first signal, a second signal, and an original constellation having a plurality of symbols in a non-uniform 8 Phase-Shift-Keying (PSK) configuration. Quadrature-Phase-Shift-Keying (QPSK) modulation is used for the first signal and Binary-Phase-Shift-Keying (BPSK) modulation is used for the second signal. The method includes the step of replacing at least some of the plurality of symbols with at least one radial-type QPSK-BPSK constellation.

摘要翻译： 提供了一种用于与第一信号，第二信号和具有非均匀8相移键控（PSK）配置中的多个符号的原始星座相关的分级调制的方法。 正交相移键控（QPSK）调制用于第一信号，二进制相移键控（BPSK）调制用于第二信号。 该方法包括用至少一个径向型QPSK-BPSK星座代替多个符号中的至少一些符号的步骤。

公开(公告)号：US09716567B2

公开(公告)日：2017-07-25

申请号：US12448224

申请日：2006-12-14

申请人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

发明人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

IPC分类号： H04B7/02 ,  H04L1/02 ,  H04L1/00 ,  H04L1/18 ,  H04L1/06 ,  H04L1/16

CPC分类号： H04L1/0003 ,  H04L1/0016 ,  H04L1/0025 ,  H04L1/0656 ,  H04L1/1671 ,  H04L1/1848

摘要： A method and apparatus for improving performance in communication systems is provided. In one implementation, initial encoded data that has been encoded with a rateless code is received. A quality metric is determined for a communication medium on which the initial encoded data has been received. A modulation scheme used in sending the initial encoded data on the communication medium is identified. An estimate is determined, based on the identified modulation scheme and the determined quality metric, of an amount of mutual information being received per unit of received encoded data. An amount of mutual information being received is determined, based on the determined estimate.

公开(公告)号：US07464318B2

公开(公告)日：2008-12-09

申请号：US10554580

申请日：2004-04-24

申请人： Joshua Lawrence Koslov ,  Kumar Ramaswamy ,  Wen Gao

发明人： Joshua Lawrence Koslov ,  Kumar Ramaswamy ,  Wen Gao

IPC分类号： H03M13/00

CPC分类号： H04B7/18517 ,  H04L1/0016 ,  H04L1/005 ,  H04L27/366

摘要： A satellite communications system comprises a transmitting ground station, including a transmitter and a receiver, a satellite transponder and a receiving ground station. The transmitter transmits an uplink signal to the satellite transponder, which broadcasts the received uplink signal as a downlink signal to the receiving ground station. The transmitting ground station monitors the downlink signal through the receiver and calculates log-likelihood ratios (LLRs) as a function of the monitored downlink signal. These LLRs are illustratively stored in a look-up table, which are then transmitted to the receiving ground station for use in recovering data from a received data signal.

摘要翻译： 一种卫星通信系统包括一个发射地面站，包括发射机和接收机，卫星转发器和接收地面站。 发射机向卫星转发器发送上行链路信号，卫星转发器将接收到的上行链路信号作为下行链路信号广播到接收地面站。 发射地面站通过接收机监测下行链路信号，并根据被监视的下行链路信号计算对数似然比（LLR）。 这些LLR被示例性地存储在查找表中，然后将其发送到接收地面站，以用于从接收的数据信号恢复数据。

公开(公告)号：US09680600B2

公开(公告)日：2017-06-13

申请号：US12448187

申请日：2006-12-14

申请人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

发明人： Joshua Lawrence Koslov ,  Wen Gao ,  Yik Chung Wu

IPC分类号： H04L27/00 ,  H04L1/00 ,  H04L1/16

摘要： A method and apparatus for improving performance in communication systems is provided. In one implementation, information is accessed indicating the quality of at least one communication channel. Based on the accessed information, a modulation scheme is indicated for sending data over the channel encoded with a rateless code. Various different information relating to the communication channel can be used to determine a quality metric for the channel.

公开(公告)号：US07949074B2

公开(公告)日：2011-05-24

申请号：US10555617

申请日：2004-04-24

申请人： Wen Gao ,  Joshua Lawrence Koslov

发明人： Wen Gao ,  Joshua Lawrence Koslov

IPC分类号： H04L27/06

CPC分类号： H04L27/3466

摘要： A satellite receiver receives a hierarchical modulation based received signal, which has at least an upper layer (UL) and a lower layer (LL), and simultaneously recovers therefrom data conveyed in the UL signal and data conveyed in the LL signal.

摘要翻译： 卫星接收机接收具有至少上层（UL）和下层（LL）的基于层次调制的接收信号，并且同时从UL信号中传送的数据和在LL信号中传送的数据中恢复。