公开(公告)号：US08842746B2

公开(公告)日：2014-09-23

申请号：US13180680

申请日：2011-07-12

Applicant: S. Christopher Gladwin ,  Gary W. Grube ,  Timothy W. Markison

Inventor： S. Christopher Gladwin ,  Gary W. Grube ,  Timothy W. Markison

IPC: H04L27/00 ,  H04L1/00 ,  H04L29/06 ,  H04L29/08 ,  H04L1/20 ,  H04W28/04

CPC classification number: H04L63/08 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0689 ,  G06F11/1076 ,  G06F21/6218 ,  H04L1/0045 ,  H04L1/208 ,  H04L67/1097 ,  H04W28/04

Abstract: A method begins by a processing module determining a mapping of encoded data slices to wireless channels for wireless communication of data, wherein a data segment of the data is encoded in accordance with a dispersed storage error encoding protocol to produce a set of encoded data slices. The method continues with the processing module configuring, in accordance with the mapping, receivers of a wireless communication device to receive, via a set of wireless channels, at least some of the set of encoded data slices to produce configured receivers. The method continues with the processing module facilitating the configured receivers to receive encoded data slices of the set of encoded data slices to produce received encoded data slices and when at least a decode threshold number of received encoded data slices have been received, decoding the received encoded data slices to recapture the data segment.

Abstract translation: 一种方法开始于处理模块确定编码数据切片与数据无线通信的无线信道的映射，其中根据分散的存储错误编码协议对数据的数据段进行编码以产生一组编码数据切片。 该方法继续，处理模块根据映射配置无线通信设备的接收器，以经由一组无线信道接收该组编码数据片段中的至少一些以产生配置的接收器。 该方法继续处理模块，便于配置的接收器接收编码数据片组的编码数据片，以产生接收的编码数据片，并且当已经接收到至少解码阈值数量的接收编码数据片时， 数据片段重新捕获数据段。

公开(公告)号：US08804886B2

公开(公告)日：2014-08-12

申请号：US13091062

申请日：2011-04-20

Applicant: Yi-Pin Eric Wang

Inventor： Yi-Pin Eric Wang

IPC: H04B1/10

CPC classification number: H04L25/03057 ,  H04B7/0413 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/208 ,  H04L25/067 ,  H04L2025/03363 ,  H04L2025/03426

Abstract: A receiver for processing a received signal encoded with a codeword and mapped to two layers includes a plurality of equalizers for equalizing the received signal, a plurality of demodulators for demodulating a respective equalized signal, a decoder for decoding the demodulated signal by extracting soft bits from the demodulated signal, a modulator for modulating the decoded signal by generating soft symbols based on the extracted soft bits, a demapper for demapping the modulated signal to soft symbols corresponding to each of the two layers and a plurality of inter-layer interference cancellers for cancelling interference utilizing the demapped soft symbols wherein the demapped soft symbols are utilized also by the equalizers to reduce inter-symbol interference.

Abstract translation: 用于处理用码字编码并映射到两层的接收信号的接收机包括用于均衡接收信号的多个均衡器，用于解调相应的均衡信号的多个解调器，用于通过提取软比特来解码解调信号的解码器 解调信号，用于通过基于提取的软比特生成软符号来调制解码信号的调制器，用于将调制信号解映射到对应于两个层中的每一个的软符号的解映射器和用于消除的多个层间干扰消除器 利用解映射的软符号的干扰，其中平滑器还利用去映射的软符号来减少符号间干扰。

公开(公告)号：US08630600B1

公开(公告)日：2014-01-14

申请号：US13627996

申请日：2012-09-26

Applicant: Aviat U.S., Inc.

Inventor： Emerick Vann ,  Yen-Fang Chao ,  Youming Qin ,  Roland Matian

IPC: H04B17/00

CPC classification number: H04L1/206 ,  H03C3/406 ,  H03D3/009 ,  H03D7/168 ,  H04B1/0014 ,  H04B1/10 ,  H04B1/16 ,  H04B1/28 ,  H04B1/30 ,  H04L1/0036 ,  H04L1/203 ,  H04L1/208 ,  H04L27/38 ,  H04L27/3854

Abstract: Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I”) signal and a quadrature (“Q”) signal, an I/Q signal adjustor that adaptively adjusts the Q signal to increase the signal-to-noise ratio (SNR) of a transitory signal that is based on a second modulated signal, and an I/Q modulator that modulates the I signal and the adjusted Q signal to the second modulated signal. To increase the SNR, the Q signal may be adjusted based on a calculated error determined for the transitory signal during demodulation by a demodulator downstream from the I/Q modulator.

Abstract translation: 各种实施例提供了用于使用解调然后再调制将一个调制信号信号转换到另一调制信号的系统和方法。 根据一些实施例，信号接收系统可以包括将第一调制信号解调为同相（“I”）信号和正交（“Q”）信号的I / Q解调器，I / Q信号调节器， 自适应地调整Q信号以增加基于第二调制信号的瞬态信号的信噪比（SNR），以及将I信号和经调整的Q信号调制为第二调制信号的I / Q调制器 信号。 为了增加SNR，可以基于在由I / Q调制器下游的解调器解调期间为瞬态信号确定的计算误差来调整Q信号。

公开(公告)号：US20130279558A1

公开(公告)日：2013-10-24

申请号：US13860709

申请日：2013-04-11

Applicant: NXP B.V.

Inventor： Weihua TANG ,  Arie Geert Cornelis KOPPELAAR

IPC: H04L27/26

CPC classification number: H04L27/2649 ,  H04L1/208 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/03159 ,  H04L25/03292 ,  H04L25/03324 ,  H04L27/2647

Abstract: Receiving an OFDM signal having a series of OFDM symbols, each having sub-carriers, each modulated by at least one data bit encoded with error-correcting code. The receiver has a first error-correcting decoder to decode sequentially data bits of a received first OFDM symbol; a re-encoder to receive decoded bits and re-encode a leading portion of the decoded bits; a mapper to receive the re-encoded leading portion of bits, map these bits to a corresponding subset of the sub-carriers, and thereby estimate a modulation symbol applied to each sub-carrier, by the transmitter; a channel estimator to produce a channel estimate by comparing sub-carrier modulation symbols with corresponding sub-carriers received by the receiver; and an equalizer to process the received signal to remove distortions from the transmission channel, using the channel estimate. The re-encoder begins re-encoding the leading portion of the bits before a trailing portion has been decoded.

Abstract translation: 接收具有一系列OFDM符号的OFDM信号，每个OFDM符号具有副载波，每个OFDM符号由被纠错码编码的至少一个数据位进行调制。 接收器具有第一纠错解码器，以顺序地解码所接收的第一OFDM符号的数据位; 重新编码器，用于接收解码的比特并重新编码解码的比特的前导部分; 映射器，用于接收重新编码的前导部分的比特，将这些比特映射到子载波的相应子集，从而估计由发射机应用于每个子载波的调制符号; 信道估计器，用于通过将子载波调制符号与由接收机接收的相应副载波进行比较来产生信道估计; 以及均衡器，以使用信道估计来处理接收的信号以去除传输信道的失真。 重编码器在尾部部分被解码之前开始重新编码位的前导部分。

公开(公告)号：US20120304034A1

公开(公告)日：2012-11-29

申请号：US13571819

申请日：2012-08-10

Applicant: Li Fung Chang ,  Yongqian Wang

Inventor： Li Fung Chang ,  Yongqian Wang

IPC: G06F11/08

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 wireless device for implementing Incremental Redundancy (IR) operations includes system processing circuitry operable to perform Physical (PHY) layer operations, Media Access Control (MAC) layer operations and Radio Link Control (RLC) operations of the wireless device. The system processing circuitry further includes an IR control module for processing IR transactions related to a received RLC data block and for tracking an Automatic Repeat Request (ARQ) receiving state and received block bit map and a Layer 1 (L1) module for intercepting and diverting the IR transactions to the IR control module and for passing a correctly decoded RLC data block to the RLC layer operations via the MAC layer operations thereby automatically synchronizing the RLC layer operations. An IR processing module is coupled to the system processing circuitry to perform IR operations on the received RLC data block based upon a direction from the IR control module.

Abstract translation: 用于实现增量冗余（IR）操作的无线设备包括可操作以执行无线设备的物理（PHY）层操作，媒体访问控制（MAC）层操作和无线电链路控制（RLC）操作的系统处理电路。 系统处理电路还包括IR控制模块，用于处理与所接收的RLC数据块有关的IR事务，并用于跟踪自动重复请求（ARQ）接收状态和接收的块位图以及用于拦截和转移的层1（L1）模块 到IR控制模块的IR事务和经由MAC层操作将正确解码的RLC数据块传送到RLC层操作，从而自动同步RLC层操作。 IR处理模块耦合到系统处理电路，以基于来自IR控制模块的方向对所接收的RLC数据块执行IR操作。

公开(公告)号：US20120219093A1

公开(公告)日：2012-08-30

申请号：US13437066

申请日：2012-04-02

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: H04L27/20 ,  H04L27/06 ,  H04L27/22

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 for measuring channel quality over which has been transmitted a sequence of symbols produced by encoding and constellation mapping a source data element sequence. A sequence of received symbols is received over the channel. The sequence of received symbols is de-mapped based on a first channel quality indicator previously transmitted to a transmitter of the sequence of symbols. The de-mapped symbols are decoded to produce a decoded output sequence. In some embodiments, the decoding may be based on the first channel quality indicator. The decoded output sequence is re-encoded to produce a re-encoded output sequence. The de-mapped symbols are correlated with the re-encoded output sequence to produce a second channel quality indicator. The second channel quality indicator is transmitted to the transmitter to adaptively select a type of mapping based on the second channel quality indicator.

Abstract translation: 一种用于测量信道质量的方法和装置，已经发送了通过对源数据元素序列进行编码和星座映射而产生的符号序列。 通过该信道接收一系列接收到的符号。 基于先前发送到符号序列的发射机的第一信道质量指示符来对接收符号的序列进行解映射。 解映射的符号被解码以产生解码的输出序列。 在一些实施例中，解码可以基于第一信道质量指示符。 解码的输出序列被重新编码以产生重新编码的输出序列。 去映射符号与重新编码的输出序列相关，以产生第二信道质量指示符。 第二信道质量指示符被发送到发射机，以基于第二信道质量指示符自适应地选择一种类型的映射。

公开(公告)号：US08238459B2

公开(公告)日：2012-08-07

申请号：US12361199

申请日：2009-01-28

Applicant: Takashi Yokokawa ,  Yasuhiro Iida ,  Toshiyuki Miyauchi ,  Takashi Hagiwara ,  Takanori Minamino ,  Naoya Haneda

Inventor： Takashi Yokokawa ,  Yasuhiro Iida ,  Toshiyuki Miyauchi ,  Takashi Hagiwara ,  Takanori Minamino ,  Naoya Haneda

IPC: H04L23/02

CPC classification number: H04L27/3827 ,  H04L1/0054 ,  H04L1/208 ,  H04L7/042

Abstract: A decoding device that decodes demodulated data obtained by demodulating a quadrature modulated signal arising from digital modulation of a carrier and detects synchronization, the decoding device includes, a decoder configured to decode first demodulated data that is the demodulated data obtained by demodulating the quadrature modulated signal and is composed of in-phase axis data and quadrature axis data. The decoding device decodes second demodulated data obtained by interchanging the in-phase axis data and the quadrature axis data of the first demodulated data. A synchronization detector is configured to detect a boundary between predetermined information symbol sequences from first decoded data obtained by decoding the first demodulated data and detect the boundary from second decoded data obtained by decoding the second demodulated data. The synchronization detector selects and outputs one of the first decoded data and the second decoded data based on a result of the detection of the boundary.

Abstract translation: 一种解码装置，对通过解调由载波的数字调制产生的正交调制信号而获得的解调数据进行解码，并检测同步，解码装置包括：解码器，被配置为对作为通过解调正交调制信号而获得的解调数据的第一解调数据进行解码 并且由同相轴数据和正交轴数据组成。 解码装置对通过交换同相轴数据和第一解调数据的正交轴数据而获得的第二解调数据进行解码。 同步检测器被配置为从通过解码第一解调数据获得的第一解码数据检测预定信息符号序列之间的边界，并通过解码第二解调数据获得的第二解码数据检测边界。 同步检测器基于边界检测的结果选择并输出第一解码数据和第二解码数据中的一个。

公开(公告)号：US20110176638A1

公开(公告)日：2011-07-21

申请号：US12690196

申请日：2010-01-20

Applicant: Jonathan Davey ,  Wang-Hsin Peng

Inventor： Jonathan Davey ,  Wang-Hsin Peng

IPC: H04L25/06

CPC classification number: H04L25/061 ,  H04L1/203 ,  H04L1/208 ,  H04L1/242 ,  H04L25/06 ,  H04L25/069

Abstract: A method and apparatus for adjusting a symbol decision threshold at a receiver in a communication network enables the receiver to be adapted to more correctly receive symbols as transmitted by a transmitter. In one embodiment, a received bit imbalance is detected by a receiver prior to error correction and after error correction to determine whether an error component of the received signal contains larger numbers of ones or larger numbers of zeros. Where the transmitter scrambles the signal prior to transmission, the receiver will also scramble the signal after error correction and prior to counting the number of zeros or ones. Any imbalance between the number of transmitted and received ones or zeros is used as feedback to adjust threshold values used by detectors to fine tune the manner in which the receiver interprets incoming signals.

Abstract translation: 用于在通信网络中的接收机处调整符号判定阈值的方法和装置使得接收机适于更正确地接收由发射机发送的符号。 在一个实施例中，在错误校正之前和纠错之后由接收器检测接收到的比特不平衡，以确定接收信号的误差分量是否包含较大数量的1或更大数量的零。 在发射机之前发射机对信号进行加扰的地方，接收机也将在纠错之后并在计数零或数之前对信号进行扰频。 使用发送和接收的个数或零之间的任何不平衡作为反馈来调整检测器使用的阈值，以微调接收器解释输入信号的方式。

公开(公告)号：US07924933B2

公开(公告)日：2011-04-12

申请号：US11857273

申请日：2007-09-18

Applicant: Narayan Prasad ,  Xiaodong Wang ,  Mohammad Madihian

Inventor： Narayan Prasad ,  Xiaodong Wang ,  Mohammad Madihian

IPC: H04L1/02

CPC classification number: H04L1/20 ,  H04L1/208 ,  H04L25/03305 ,  H04L25/03318 ,  H04L25/03993

Abstract: A method includes the steps of: i) listing out all possibilities for first symbol of a two stream signal; ii) determining a second symbol of the two stream signal for each said first symbol listed out, iii) evaluating a metric for each said first symbol and second symbol pair, iv) determining the exact maximum log likelihood ratio for all bits associated with said first symbol using said metrics, v) decoding a codeword-1 using the maximum log likelihood ratios, vi) re-encoding said codeword-1, vii) modulating said re-encoded codeword-1, viii) subtracting said modulated re-encoded codeword-1 from said two stream signal, ix) determining metrics for all possibilities for second symbol in the signal obtained in viii, x) determining the maximum log likelihood ratios for all bits associated with second symbol, and xi) decoding said codeword-2 using the maximum log likelihood ratios for all bits associated with said second symbol.

Abstract translation: 一种方法包括以下步骤：i）列出双流信号的第一符号的所有可能性; ii）为列出的每个所述第一符号确定两个流信号的第二符号，iii）评估每个所述第一符号和第二符号对的度量，iv）确定与所述第一符号和第二符号对相关联的所有位的精确最大对数似然比 符号，使用所述度量，v）使用最大对数似然比对码字-1进行解码，vi）重新编码所述码字-1，vii）调制所述重新编码的码字-1，viii）减去所述经调制的重编码码字 - 1）从所述两个流信号中ix确定在viii中获得的信号中的第二符号的所有可能性的度量，x）确定与第二符号相关联的所有比特的最大对数似然比，以及xi）使用 与所述第二符号相关联的所有位的最大对数似然比。

公开(公告)号：US07822154B2

公开(公告)日：2010-10-26

申请号：US10236414

申请日：2002-09-06

Applicant: Ernest C. Chen ,  Chinh Tran

Inventor： Ernest C. Chen ,  Chinh Tran

IPC: H03D1/04

CPC classification number: H04B7/18515 ,  H04B7/1851 ,  H04B7/18526 ,  H04B17/318 ,  H04L1/20 ,  H04L1/206 ,  H04L1/208 ,  H04L27/183 ,  H04L27/227 ,  H04L27/366 ,  H04L2027/0061

Abstract: Systems and methods are presented for measuring power levels of primary and interfering signals as well as noise, particularly for satellite transmitted signals. A typical method comprises the steps of receiving a signal comprising a primary signal, an interference signal and noise, demodulating the primary signal to remove a carrier frequency, decoding the primary signal to obtain symbols, estimating a power level of the primary signal based upon the demodulated and decoded primary signal. Additionally, an ideal primary signal can be generated from the carrier power and frequency and the symbols and subtracted from the received signal to produce the noise and interference signal. The noise and interference power is then estimated from the noise and interference signal.

Abstract translation: 提出了系统和方法，用于测量主要和干扰信号的功率水平以及噪声，特别是卫星发射信号的噪声。 典型的方法包括以下步骤：接收包括主信号，干扰信号和噪声的信号，解调主信号以去除载波频率，解码主信号以获得符号，基于该信号估计主信号的功率电平 解调和解码的主信号。 此外，理想的主信号可以从载波功率和频率以及符号生成，并从接收信号中减去产生噪声和干扰信号。 然后从噪声和干扰信号估计噪声和干扰功率。