公开(公告)号：US20070211815A1

公开(公告)日：2007-09-13

申请号：US11683806

申请日：2007-03-08

Applicant: Jung-Lin Pan ,  Donald Grieco ,  Nirav Shah ,  Robert Olesen

Inventor： Jung-Lin Pan ,  Donald Grieco ,  Nirav Shah ,  Robert Olesen

IPC: H04L1/02

CPC classification number: H04L25/067 ,  H04B7/0689 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L1/065 ,  H04L1/0668 ,  H04L5/023 ,  H04L25/03318 ,  H04L27/2647

Abstract: A method and apparatus for scaling a soft bit for decoding in a wireless communication system are described. A scaling factor is calculated for a received symbol based on an estimated signal-to-noise ratio (SNR) of the received symbol and the scaling factor is applied to a soft bit of the received symbol. A multiple-input multiple-output (MIMO) scheme may be implemented to transmit multiple data streams. In such case, a soft bit of a received symbol on each data stream is scaled by a scaling factor for the received symbol on each data stream.

Abstract translation: 描述用于在无线通信系统中缩放用于解码的软比特的方法和装置。 基于接收到的符号的估计信噪比（SNR）来计算接收符号的缩放因子，并且将缩放因子应用于接收符号的软比特。 可以实现多输入多输出（MIMO）方案来传输多个数据流。 在这种情况下，在每个数据流上的接收符号的软比特被缩放为每个数据流上的接收符号的缩放因子。

公开(公告)号：US07116271B2

公开(公告)日：2006-10-03

申请号：US11232610

申请日：2005-09-22

Applicant: Ivica Kostanic ,  Steven J. Goldberg

Inventor： Ivica Kostanic ,  Steven J. Goldberg

IPC: G01S3/16 ,  H04B7/216

CPC classification number: H04L1/0618 ,  H04B7/08 ,  H04L1/065

Abstract: A communications device for separating source signals provided by M signal sources includes an antenna array comprising N antenna elements for receiving at least N different summations of the M source signals. A code despreader is connected to the N antenna elements for decoding the at least N different summations of the M source signals. Each one of the N different summations includes k codes for providing k different summations of the M source signals associated therewith. A blind signal separation processor forms a mixing matrix comprising at least kN different summations of the M source signals, and separates desired source signals from the mixing matrix. The mixing matrix has a rank equal up to kN.

Abstract translation: 用于分离由M个信号源提供的源信号的通信设备包括一个包括N个天线元件的天线阵列，用于接收M个源信号的至少N个不同的求和。 码解扩器连接到N个天线元件，用于对M个源信号的至少N个不同求和进行解码。 N个不同求和中的每一个包括用于提供与其相关联的M个源信号的k个不同求和的k个代码。 盲信号分离处理器形成包含M个源信号的至少kN个不同求和的混合矩阵，并且从混合矩阵中分离所需的源信号。 混合矩阵具有等于kN的等级。

公开(公告)号：US20060013343A1

公开(公告)日：2006-01-19

申请号：US11231691

申请日：2005-09-21

Applicant: Hesham El-Gamal ,  A. Hammons

Inventor： Hesham El-Gamal ,  A. Hammons

IPC: H03D1/00

CPC classification number: H04B7/0669 ,  H04L1/04 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/0631 ,  H04L1/065

Abstract: A communication system for transmitting encoded signals over a communication channel is disclosed. The system includes a transmitter, which has a source that outputs a message signal. The transmitter also includes an encoder that generates a code word in response to the message signal. The code word has a construction that defines a plurality of paths associated with an intersymbol interference (ISI) environment of the communication channel, wherein the code word achieves a diversity based upon the number of transmit antennas and the number of ISI paths. Further, the transmitter includes a modulator that modulates the code word for transmission over the communication channel, and multiple antennas that transmit the modulated code word over the communication channel. The system encompasses a receiver that receives the transmitted code word via a number of receive antennas.

公开(公告)号：US20050271167A1

公开(公告)日：2005-12-08

申请号：US11197856

申请日：2005-08-05

Applicant: William Betts

Inventor： William Betts

IPC: H04L1/00 ,  H04L1/06 ,  H04L27/06 ,  H04L27/26 ,  H04L27/34

CPC classification number: H04L1/0054 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/006 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/065 ,  H04L5/023 ,  H04L27/2608 ,  H04L27/3416

Abstract: Several embodiments of a space diversity trellis interleaver system are provided for communicating data over a plurality of separate communication paths in order to inhibit distortion caused by impulse noise or other correlated noise and enhance the data transmission rate of data communications. The transmitter is designed to receive a plurality of data streams from data terminal equipment (DTE), which can be one or more devices. One or more convolutional encoders, preferably trellis encoders, encode each of the data streams. In an alternative embodiment, more than one trellis encoder is used to trellis encode each data stream. Data segments from the convolutionally encoded data streams are interleaved with a switch. The plurality of interleaved convolutionally-encoded data streams are modulated and transmitted onto a respective plurality of separate communication paths. At the receiver, the plurality of data streams is received from the separate communication paths and demodulated. The data segments are de-interleaved with a switch, and then the de-interleaved data streams are convolutionally decoded with convolutional decoders, preferably trellis decoders. The de-interleaved convolutionally decoded data streams are communicated to one or more DTEs.

Abstract translation: 提供空间分集网格交织器系统的若干实施例用于在多个单独的通信路径上传送数据，以便抑制由脉冲噪声或其他相关噪声引起的失真并增强数据通信的数据传输速率。 发射机被设计为从数据终端设备（DTE）接收多个数据流，数据终端设备（DTE）可以是一个或多个设备。 一个或多个卷积编码器，优选格栅编码器，对每个数据流进行编码。 在替代实施例中，使用多于一个网格编码器对每个数据流进行网格编码。 来自卷积编码数据流的数据段与交换机交错。 多个交错的卷积编码数据流被调制并发送到相应的多个单独的通信路径上。 在接收机处，从单独的通信路径接收多个数据流并进行解调。 数据段与交换机进行解交织，然后使用卷积解码器，优选网格解码器对解交织的数据流进行卷积解码。 去交织的卷积解码的数据流被传送到一个或多个DTE。

公开(公告)号：US20030123877A1

公开(公告)日：2003-07-03

申请号：US10325370

申请日：2002-12-20

Inventor： Victor Yeeman Lo

IPC: H04B010/08

CPC classification number: H04L1/0631 ,  H04B10/532 ,  H04J14/06 ,  H04L1/005 ,  H04L1/0059 ,  H04L1/0612 ,  H04L1/0625 ,  H04L1/065

Abstract: A system and method for increasing bandwidth efficiency and data transmission performance of radio frequency wireless, optical wireless and fiber-optic digital communication links without requiring an increase in signal power. The system utilizes bandwidth efficient space-time coding to correct transmission errors and bandwidth efficient space-time modulation to dramatically increase data throughput without requiring additional signal bandwidth or power. Radio frequency wireless, optical wireless WDM and fiber-optic applications are achieved by utilizing space-time encoders, radio frequency sources, bandwidth efficient space-time modulators and power amplifiers combined with transmission devices such as one or more antennas, multifeed antennas, multimode antennas or for transmission by a suitable cable. At the receiver, the method is reversed.

Abstract translation: 一种用于提高射频无线，光无线和光纤数字通信链路的带宽效率和数据传输性能的系统和方法，而不需要增加信号功率。 该系统利用带宽有效的时空编码来纠正传输错误和带宽有效的时空调制，以显着提高数据吞吐量，而无需额外的信号带宽或功率。 射频无线，光无线WDM和光纤应用通过利用时空编码器，射频源，带宽有效的时空调制器和功率放大器与诸如一个或多个天线，多馈电天线，多模天线 或通过合适的电缆传输。 在接收机，该方法是相反的。

公开(公告)号：US11777650B2

公开(公告)日：2023-10-03

申请号：US16985883

申请日：2020-08-05

Applicant: QUALCOMM Incorporated

Inventor： Ayan Sengupta ,  Alberto Rico Alvarino ,  Qiang Shen ,  Chu-Hsiang Huang ,  Cunzhen Liu ,  Yang Sun ,  Arash Mirbagheri ,  Gabi Sarkis ,  Peter Gaal

IPC: H04L1/00 ,  H04L1/06 ,  H03M13/27 ,  H03M13/15 ,  H04L27/26 ,  H04L5/00 ,  H03M13/29

CPC classification number: H04L1/0071 ,  H04L1/0003 ,  H04L1/0057 ,  H04L1/0606 ,  H04L1/0643 ,  H03M13/15 ,  H03M13/27 ,  H03M13/271 ,  H03M13/2703 ,  H03M13/2778 ,  H03M13/2789 ,  H03M13/2906 ,  H04L1/0059 ,  H04L1/065 ,  H04L5/0023 ,  H04L27/2607

Abstract: A base station maps code blocks of a transport block of a transport block size (TBS) for a channel using tone-level interleaving or resource element (RE)-level interleaving. Then, the base station can transmit the code blocks of the transport block of the TBS for the channel. A UE may receive the channel from the base station and de-interleave the received tones of the channel in a frequency domain to obtain the code blocks of the transport block having the TBS for the channel.

公开(公告)号：US11742986B2

公开(公告)日：2023-08-29

申请号：US17565965

申请日：2021-12-30

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Woosuk Ko

IPC: H04L1/00 ,  H04L1/06 ,  H04L5/00 ,  H04L27/26 ,  H04L9/40

CPC classification number: H04L1/0059 ,  H04L1/00 ,  H04L1/0071 ,  H04L1/065 ,  H04L5/00 ,  H04L5/0007 ,  H04L9/40 ,  H04L27/26

Abstract: A broadcast signal reception method, according to one embodiment of the present invention, may include receiving the broadcast signal including broadcast data and physical layer signaling information, where the physical layer signaling information includes frequency interleaver information for indicating whether a frequency interleaver is applied to the broadcast data, performing frequency deinterleaving on the broadcast data selectively based on the frequency interleaver information, convolutionally deinterleaving the broadcast data, block deinterleaving the convolutionally deinterleaved broadcast data, and cell deinterleaving the block deinterleaved broadcast data using a memory, where the cell deinterleaving includes random writing the block deinterleaved broadcast data into the memory and linear reading the block deinterleaved broadcast data from the memory, and the random writing is performed based on a permutation sequence and the permutation sequence varies for every FEC block.

公开(公告)号：US08139668B2

公开(公告)日：2012-03-20

申请号：US12503465

申请日：2009-07-15

Applicant: Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

Inventor： Philip V. Orlik ,  Lu Zhang ,  Raymond Yim ,  Jinyun Zhang

IPC: H04L5/12 ,  H04B7/02 ,  H03C7/02

CPC classification number: H04L1/065 ,  H04L1/0003 ,  H04L25/0212 ,  H04L25/0226

Abstract: A transmitter encodes an input bitstream using space-time trellis coding (STTC). The encoder includes a serial to parallel convertor to produce a first and second output bitstreams. First and second three bit shift registers are connected to produce first and second output bitstreams. A multiplier applies a code generating weight to each bit of the shift registers to encode the bitstreams. A first switch is connected between a last bit of the first shift register and a first bit of the second shift register. A second switch is connected between the second output and the first bit of the second shift register. The first set of encoded bit streams and the second set of encoded bitstreams are combined and mapped to a frequency domain.

Abstract translation: 发射机使用空时网格编码（STTC）对输入比特流进行编码。 编码器包括串行到并行转换器以产生第一和第二输出比特流。 连接第一和第二三位移位寄存器以产生第一和第二输出比特流。 乘法器将代码生成权重应用于移位寄存器的每个位以对比特流进行编码。 第一开关连接在第一移位寄存器的最后位和第二移位寄存器的第一位之间。 第二开关连接在第二输出端和第二移位寄存器的第一位之间。 第一组编码比特流和第二组编码比特流被组合并映射到频域。

公开(公告)号：US07496148B2

公开(公告)日：2009-02-24

申请号：US11773257

申请日：2007-07-03

Applicant: Chang-Soo Hwang ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

Inventor： Chang-Soo Hwang ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC: H04B7/02 ,  H04B7/10

CPC classification number: H04L1/065 ,  H04L1/0069 ,  H04L1/0625 ,  H04L1/0631

Abstract: A mobile communication system includes at least three transmission antennas of first to third transmission antennas, and uses an overlapped antenna scheme for grouping the first and second transmission antennas into a first transmission antenna group and grouping the second and third transmission antennas into a second transmission antenna group. First and second modulators modulate L information bit streams to be transmitted through the first transmission antenna group and output first and second modulation symbol streams. Third and fourth modulators modulate L other information bit streams to be transmitted through the second transmission antenna group and output third and fourth symbol streams. First to fourth puncturers puncture at least one modulation symbol in a predetermined position among the first to fourth modulation symbol streams. A multiplexer transmits a modulation symbol stream output from the first puncturer through the first transmission antenna, transmits modulation symbol streams output from the second and third puncturers through the second transmission antenna after summation, and transmits a modulation symbol stream output from the third puncturer through the third transmission antenna.

Abstract translation: 移动通信系统包括第一至第三发射天线的至少三个发射天线，并且使用重叠的天线方案将第一和第二发射天线分组成第一发射天线组，并将第二和第三发射天线分组成第二发射天线 组。 第一和第二调制器调制通过第一发送天线组发送的L个信息比特流并输出第一和第二调制符号流。 第三和第四调制器调制通过第二发送天线组发送的另外的信息比特流并输出第三和第四符号流。 第一至第四穿孔器在第一至第四调制符号流中的预定位置中至少刺穿一个调制符号。 复用器通过第一发送天线发送从第一穿孔器输出的调制符号流，在求和之后通过第二发送天线发送从第二和第三穿孔器输出的调制符号流，并且从第三穿孔器输出的调制符号流通过 第三发射天线。

公开(公告)号：US07460607B2

公开(公告)日：2008-12-02

申请号：US10606924

申请日：2003-06-26

Applicant: Pieter van Rooyen ,  Danie van Wyk

Inventor： Pieter van Rooyen ,  Danie van Wyk

IPC: H04L5/12

CPC classification number: H04L1/0625 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/0612 ,  H04L1/0631 ,  H04L1/065 ,  H04L1/0656

Abstract: An apparatus and method for transmitting a signal from a plurality of antennas. The apparatus includes an outer encoder configured to encode a stream of data according to a turbo multiple trellis coded modulation scheme, and generate a plurality of channel-coded symbol streams. The apparatus also includes an inner encoder serially concatenated with the outer encoder. The inner encoder is configured to receive the channel-coded symbol streams and provide space-time coding to the channel-coded symbol streams, thereby generating a plurality of space-time-channel-coded symbol streams. A plurality of antennas coupled are to the inner encoder, and each of the plurality of antennas is configured to transmit one of the plurality of space-time-channel-coded symbol streams.

Abstract translation: 一种用于从多个天线发送信号的装置和方法。 该装置包括外编码器，其被配置为根据turbo多网格编码调制方案对数据流进行编码，并生成多个信道编码符号流。 该装置还包括与外部编码器串联连接的内部编码器。 内部编码器被配置为接收信道编码符号流并且向信道编码的符号流提供空间时间编码，从而生成多个空时信道编码符号流。 多个天线耦合到内部编码器，并且多个天线中的每一个被配置为发送多个空时信道编码符号流中的一个。