公开(公告)号：US07773699B2

公开(公告)日：2010-08-10

申请号：US10038916

申请日：2002-01-08

Applicant: Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Dong-Sheng Yu ,  Wen Tong

Inventor： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Dong-Sheng Yu ,  Wen Tong

IPC: H03D1/00 ,  H04L27/06

CPC classification number: H04L1/0631 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0036 ,  H04L1/208 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0226 ,  H04L25/0236 ,  H04L25/03318 ,  H04L25/067

Abstract: A method and apparatus are provided for combining pilot symbols and Transmit Parameter Signalling (TPS) channels within an OFDM frame. The method uses Differential Space-Time Block Coding to encode a fast signalling message at an OFDM transmitter. At an OFDM receiver, the encoded fast signalling message can be decoded using differential feedback to recover information about the channel responses that would normally be carried by pilot symbols. In wireless data transmission employing adaptive modulation and coding, an instantaneous channel quality measurement, independent of the origin of interference for example, neighboring-cell interference, white thermal noise, or residual Doppler shift is provided. Using the correlation between a signal which has been symbol de-mapped, and one which has also been soft decoded and re-encoded, a channel quality indicator is produced. Another embodiment uses TPS data as pilot symbols by decoding TPS and then re-encoding.

Abstract translation: 提供了一种在OFDM帧内组合导频符号和发射参数信令（TPS）信道的方法和装置。 该方法使用差分空时块编码来在OFDM发射机处对快速信令消息进行编码。 在OFDM接收机处，可以使用差分反馈对编码的快速信令消息进行解码，以恢复通常由导频符号携带的信道响应的信息。 在采用自适应调制和编码的无线数据传输中，提供了独立于干扰起源的瞬时信道质量测量，例如相邻小区干扰，白热噪声或残余多普勒频移。 使用已被符号解映射的信号与也被软解码和重新编码的信号之间的相关性，产生信道质量指示符。 另一实施例通过解码TPS然后重新编码来使用TPS数据作为导频符号。

公开(公告)号：US07738587B2

公开(公告)日：2010-06-15

申请号：US10519375

申请日：2003-07-03

Applicant: Ernest C. Chen ,  Joseph Santoru

Inventor： Ernest C. Chen ,  Joseph Santoru

IPC: H04L27/00

CPC classification number: H04L27/183 ,  H04L1/20 ,  H04L1/208 ,  H04L27/3488 ,  H04L2001/0098

Abstract: Improvements to a layered modulation (LM) implementation are disclosed. The present invention discloses two implementations of LM, using single and multiple transponders per signal frequency, respectively. Layered hierarchical 8PSK (H-8PSK) is a special case of LM. By re-encoding the high-priority (HP) portion of an H-8PSK signal, LM can improve carrier-to-noise ratio (CNR) of a H-8PSK signal. LM can be computer-simulated and a two-layered signal can be sequentially demodulated with a predicted CNR performance. An LM signal can be simulated using live signals for off-line processing. In addition, a signal processing apparatus can process in real time LM signals emulated from live satellite signals.

Abstract translation: 公开了对分层调制（LM）实现的改进。 本发明公开了LM的两种实施方式，每个信号频率分别使用单个和多个转发器。 层次分层8PSK（H-8PSK）是LM的一种特殊情况。 通过重新编码H-8PSK信号的高优先级（HP）部分，LM可以提高H-8PSK信号的载波噪声比（CNR）。 LM可以被计算机模拟，并且可以用预测的CNR性能来顺序地解调两层信号。 可以使用用于离线处理的实时信号来模拟LM信号。 此外，信号处理装置可以实时处理从实时卫星信号仿真的LM信号。

公开(公告)号：US07643842B2

公开(公告)日：2010-01-05

申请号：US10889808

申请日：2004-07-12

Applicant: Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

Inventor： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

IPC: H04B1/16 ,  H04W52/18

CPC classification number: H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

Abstract: Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

Abstract translation: 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常是软的）度量，指示接收到的信号质量和设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。

公开(公告)号：US20090245436A1

公开(公告)日：2009-10-01

申请号：US12409832

申请日：2009-03-24

Applicant: Arunava Chaudhuri ,  Hemanth Sampath ,  Raghu N. Challa ,  Ravi Palanki ,  Sunil K. Kandukuri narayana

Inventor： Arunava Chaudhuri ,  Hemanth Sampath ,  Raghu N. Challa ,  Ravi Palanki ,  Sunil K. Kandukuri narayana

IPC: H04L27/06

CPC classification number: H04L1/20 ,  H04L1/1607 ,  H04L1/208

Abstract: A method for sending an acknowledgment message in a wireless communication system is disclosed. A first signal is received before receiving a second signal from a transmitter. Decoded first data is extracted from the first signal. A third signal is produced by encoding and modulating the decoded first data. The second signal is demodulated to produce second symbols. The third signal and the second symbols are correlated.

Abstract translation: 公开了一种用于在无线通信系统中发送确认消息的方法。 在从发射机接收第二信号之前接收第一信号。 从第一信号中提取解码的第一数据。 通过对解码的第一数据进行编码和调制来产生第三信号。 第二信号被解调以产生第二符号。 第三信号和第二符号相关。

公开(公告)号：US20090003377A1

公开(公告)日：2009-01-01

申请号：US11944773

申请日：2007-11-26

Applicant: Lennart Andersson ,  Andres Reial

Inventor： Lennart Andersson ,  Andres Reial

IPC: H04J15/00

CPC classification number: H04L1/0072 ,  H03M13/3738 ,  H03M13/3776 ,  H03M13/41 ,  H03M13/653 ,  H04L1/0054 ,  H04L1/1812 ,  H04L1/20 ,  H04L1/208

Abstract: Methods and apparatus are disclosed for detecting a control channel message transmitted on one of a plurality of shared control channels and targeted to a wireless receiver. In an exemplary method, messages transmitted over a plurality of shared control channels are decoded, and at least one likelihood metric is determined for each of the decoded messages. A best candidate is selected from the decoded messages, based on the likelihood metrics, and the at least one likelihood metric for the best candidate is compared to corresponding likelihood metrics for the messages other than the best candidate to determine whether the best candidate is a valid message. Wireless communication receivers configured correspondingly are also disclosed.

Abstract translation: 公开了用于检测在多个共享控制信道之一上发送并针对无线接收机的控制信道消息的方法和装置。 在示例性方法中，解码在多个共享控制信道上发送的消息，并且为每个解码的消息确定至少一个似然度量。 基于似然度量从解码的消息中选择最佳候选者，并且将最佳候选的至少一个似然度量与除最佳候选之外的消息的对应似然度量进行比较，以确定最佳候选是否是有效的 信息。 还公开了相应配置的无线通信接收机。

公开(公告)号：US20080219326A1

公开(公告)日：2008-09-11

申请号：US11716259

申请日：2007-03-09

Applicant: John Santhoff

Inventor： John Santhoff

IPC: H04B1/00

CPC classification number: H04L1/0045 ,  H04L1/208 ,  H04N21/2383 ,  H04N21/4382

Abstract: An apparatus with a first information decoder (103) and an information encoder (104) operates in at least one of a lossless and a lossy encoding modes to re-encode original information decoded by the first information decoder (103). A transmitter (105) is coupled to the information encoder (104) and to at least one receiver (112) which is coupled to a second information decoder (113). The second information decoder (113) operates in the at least one of the lossless and the lossy decoding modes to recover information substantially representing content associated with the original information.

Abstract translation: 具有第一信息解码器（103）和信息编码器（104）的装置以无损和有损编码模式中的至少一个操作，以对由第一信息解码器（103）解码的原始信息进行重新编码。 发射机（105）耦合到信息编码器（104）和耦合到第二信息解码器（113）的至少一个接收机（112）。 第二信息解码器（113）以无损和有损解码模式中的至少一个操作，以恢复基本上表示与原始信息相关联的内容的信息。

公开(公告)号：US07418060B2

公开(公告)日：2008-08-26

申请号：US10519322

申请日：2003-07-01

Applicant: Ernest C. Chen ,  Joseph Santoru

Inventor： Ernest C. Chen ,  Joseph Santoru

IPC: H04L27/00

CPC classification number: H04L1/20 ,  H04L1/208 ,  H04L27/183 ,  H04L2001/0098

Abstract: A method and receiver systems for demodulating and decoding a hierarchically modulated signal, e.g. an 8 PSK signal, are disclosed. An exemplary method includes demodulating and processing (502) the hierarchically modulated signal (202) to produce symbols (212) from the first modulation at the first hierarchical level, applying information (504) from a plurality of the symbols from the first modulation at the first hierarchical level in subtracting (214) from the demodulated hierarchically modulated signal to obtain the second modulation at the second hierarchical level and processing (506) the second modulation at the second hierarchical level to produce second symbols (222) from the demodulated second signal. The hierarchically modulated signal comprises a non-uniform 8 PSK signal. Applying the information from the plurality of the symbols from the first modulation can be achieved by applying the symbols after error correction. A decision-directed demodulation of the first modulation can also be used to further improve performance.

Abstract translation: 用于解调和解码分层调制信号的方法和接收机系统，例如， 公开了8PSK信号。 一种示例性方法包括解调和处理（502）分级调制信号（202）以从第一层级的第一调制产生符号（212），从来自第一调制的多个符号应用信息（504） 从解调的分层调制信号中减去（214）第一层级，以获得第二层级的第二调制，并处理（506）第二层级的第二调制，以从解调的第二信号产生第二符号（222）。 分层调制信号包括不均匀的8PSK信号。 可以通过在纠错后应用符号来实现来自第一调制的多个符号的信息。 也可以使用第一调制的决策导向解调来进一步提高性能。

公开(公告)号：US07366254B2

公开(公告)日：2008-04-29

申请号：US11636032

申请日：2006-12-08

Applicant: Li Fung Chang ,  Nelson R. Sollenberger ,  Yongqian Wang ,  Aki Shohara ,  Yue Chen

Inventor： Li Fung Chang ,  Nelson R. Sollenberger ,  Yongqian Wang ,  Aki Shohara ,  Yue Chen

IPC: H03K9/00

CPC classification number: H04L1/0059 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1829 ,  H04L1/1835 ,  H04L1/1845 ,  H04L1/203 ,  H04L1/208 ,  H04L25/03006 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/0008 ,  H04L2025/03401 ,  H04L2025/03407 ,  H04L2025/03726 ,  H04L2027/0038

Abstract: A system for implementing Incremental Redundancy (IR) operations in a wireless receiver includes a baseband processor, an equalizer, a system processor, and an IR processing module. The baseband processor receives an analog signal corresponding to a data block and samples the analog signal to produce samples. The equalizer receives the samples from the baseband processor, equalizes the samples, and produces soft decision bits corresponding to the data block. The equalizer may be implemented as a distinct processing component or may be performed by the baseband processor or system processor. The system processor receives at least the soft decision bits and initiates IR operations. The IR processing module receives the soft decision bits of the data block and performs IR operations on the data block in an attempt to correctly decode a corresponding data block.

Abstract translation: 用于在无线接收机中实现增量冗余（IR）操作的系统包括基带处理器，均衡器，系统处理器和IR处理模块。 基带处理器接收对应于数据块的模拟信号，并对模拟信号进行采样以产生采样。 均衡器从基带处理器接收样本，对采样进行均衡，并产生与数据块相对应的软判决位。 均衡器可以被实现为不同的处理组件，或者可以由基带处理器或系统处理器执行。 系统处理器至少接收软判决位，并启动IR操作。 IR处理模块接收数据块的软判决位，并对数据块执行IR操作，以试图正确解码对应的数据块。

公开(公告)号：US20070288547A1

公开(公告)日：2007-12-13

申请号：US11843903

申请日：2007-08-23

Applicant: Li Fung Chang ,  Yongqian Wang

Inventor： Li Fung Chang ,  Yongqian Wang

IPC: G06F15/16

CPC classification number: H04L1/0059 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1829 ,  H04L1/1835 ,  H04L1/1845 ,  H04L1/203 ,  H04L1/208 ,  H04L25/03006 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/0008 ,  H04L2025/03401 ,  H04L2025/03407 ,  H04L2025/03726 ,  H04L2027/0038

Abstract: A system for implementing Incremental Redundancy (IR) operations in a wireless receiver includes at least one processing device, an IR processing function, and IR memory. The at least one processing device is operable to receive analog signals corresponding to a data block, to sample the analog signals to produce samples, to equalize the samples to produce soft decision bits corresponding to the data block, and to initiate IR operations. The IR processing function is operable to perform IR operations on the soft decision bits of the data block in an attempt to correctly decode the data block. The IR memory operably couples to the IR processing function, includes Type I IR memory adapted to store IR status information of the data block, and includes Type II IR memory adapted to store the data block.

Abstract translation: 用于在无线接收机中实现增量冗余（IR）操作的系统包括至少一个处理设备，IR处理功能和IR存储器。 所述至少一个处理装置可操作以接收对应于数据块的模拟信号，以对所述模拟信号进行采样以产生样本，以使样本均衡以产生与所述数据块相对应的软判决位，并发起IR操作。 IR处理功能可操作以对数据块的软判决位执行IR操作，以尝试正确解码数据块。 IR存储器可操作地耦合到IR处理功能，包括适于存储数据块的IR状态信息的I型IR存储器，并且包括适于存储数据块的II型IR存储器。

公开(公告)号：US07272768B2

公开(公告)日：2007-09-18

申请号：US10731804

申请日：2003-12-09

Applicant: Li Fung Chang ,  Yongqian Wang

Inventor： Li Fung Chang ,  Yongqian Wang

IPC: H03M13/00

CPC classification number: H04L1/0059 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1829 ,  H04L1/1835 ,  H04L1/1845 ,  H04L1/203 ,  H04L1/208 ,  H04L25/03006 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/0008 ,  H04L2025/03401 ,  H04L2025/03407 ,  H04L2025/03726 ,  H04L2027/0038

Abstract: A system for implementing Incremental Redundancy (IR) operations in a wireless receiver includes at least one processing device, an IR processing function, and IR memory. The at least one processing device is operable to receive analog signals corresponding to a data block, to sample the analog signals to produce samples, to equalize the samples to produce soft decision bits corresponding to the data block, and to initiate IR operations. The IR processing function is operable to perform IR operations on the soft decision bits of the data block in an attempt to correctly decode the data block. The IR memory operably couples to the IR processing function, includes Type I IR memory adapted to store IR status information of the data block, and includes Type II IR memory adapted to store the data block.

Abstract translation: 用于在无线接收机中实现增量冗余（IR）操作的系统包括至少一个处理设备，IR处理功能和IR存储器。 所述至少一个处理装置可操作以接收对应于数据块的模拟信号，以对所述模拟信号进行采样以产生样本，以使样本均衡以产生与所述数据块相对应的软判决位，并发起IR操作。 IR处理功能可操作以对数据块的软判决位执行IR操作，以尝试正确解码数据块。 IR存储器可操作地耦合到IR处理功能，包括适于存储数据块的IR状态信息的I型IR存储器，并且包括适于存储数据块的II型IR存储器。