公开(公告)号：US07016405B2

公开(公告)日：2006-03-21

申请号：US10075330

申请日：2002-02-14

申请人： Jyhchau Horng ,  Jinyun Zhang ,  Philip Orlik

发明人： Jyhchau Horng ,  Jinyun Zhang ,  Philip Orlik

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L25/03133

摘要： A method and system for equalizing a signal transmitted via a channel of a communications system stores an input signal received via the channel in a main buffer. A training signal portion of the received input signal is stored in a circular buffer as a circulating training signal. A mean square error of the training signal is minimized while estimating the transmitted signal, until the mean square error is less than a predetermine threshold. In this case, the input signal received via the channel is equalized directly to make decisions on symbols of the signal transmitted via the channel. During an initial stage of training, the mean square error is determined directly from the training signal, during subsequent stages of training the circulating training signal is used.

公开(公告)号：US06944233B2

公开(公告)日：2005-09-13

申请号：US10017535

申请日：2001-12-12

申请人： Jinyun Zhang ,  Phillip Orlik ,  Jyhchau Horng

发明人： Jinyun Zhang ,  Phillip Orlik ,  Jyhchau Horng

IPC分类号： H04L1/00 ,  H04L23/02 ,  H04B7/02

CPC分类号： H04L1/0059 ,  H04L1/0045 ,  H04L1/0066 ,  H04L1/0071 ,  H04L1/08

摘要： A method for communicating a bit stream using turbo coding encodes each input bit in the bitstream using a single 1/3 rate turbo encoder to produce a set of three bits. One of the three bits in each set is repeated to produce a set of four bits for each input bit. A time interval between the four bits is increased before transmitting the set of four bits on a communications channel. In a receiver, the time interval between the set of four bits received via the communications channel is decreased using a de-interleaver. The received set of four bits are diversity combine into a received set of three bits, and then a single 1/3 rate turbo decoder is used to recover an output bit for each input bit.

摘要翻译： 使用turbo编码来传送比特流的方法使用单个1/3速率turbo编码器对比特流中的每个输入比特编码，以产生一组三比特。 每组中的三个位之一被重复以产生用于每个输入位的一组四位。 在通信信道上发送四位之前，四位之间的时间间隔增加。 在接收机中，使用解交织器减少经由通信信道接收的四个比特组之间的时间间隔。 所接收的四位组被分集组合成三位的接收组，然后使用单个1/3速率turbo解码器来恢复每个输入位的输出位。

公开(公告)号：US06650653B1

公开(公告)日：2003-11-18

申请号：US09487095

申请日：2000-01-19

申请人： Jyhchau Horng ,  Jay Bao

发明人： Jyhchau Horng ,  Jay Bao

IPC分类号： H04L2700

CPC分类号： H04B1/0003 ,  H04B1/406 ,  H04B1/707 ,  H04B7/0845 ,  H04B7/2612 ,  H04L25/0228 ,  H04L27/0008

摘要： In a digital radio receiver, transmitted symbols are recovered from a received signal that includes tim-shifted and frequency-shifted copies of a transmitted signal. A channel estimator extracts channel characteristics from a training signal. Receiver data and software for executing in a processor are stored in a memory connected to the processor. A parameter controller generates receiver configuration parameters from the channel characteristics and the receiver data. The received signal is decomposed into a matrix of samples according to the receiver configuration parameters to adapt the receiver to a multiple multiplexing schemes. An inner product is formed of the samples and channel characteristics, and the transmitted symbols are recovered from the inner product.

摘要翻译： 在数字无线电接收机中，从包括发送信号的定时偏移和频移副本的接收信号中恢复发送符号。 信道估计器从训练信号中提取信道特性。 用于在处理器中执行的接收器数据和软件存储在连接到处理器的存储器中。 参数控制器从通道特性和接收器数据生成接收器配置参数。 根据接收机配置参数将接收到的信号分解成采样矩阵，以使接收机适应多重复用方案。 内部产品由样品和通道特性形成，并且从内部产物中回收传输的符号。

公开(公告)号：US20060234751A1

公开(公告)日：2006-10-19

申请号：US11110346

申请日：2005-04-19

申请人： Jyhchau Horng ,  Chiu Ngo

发明人： Jyhchau Horng ,  Chiu Ngo

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/42 ,  H04B7/04 ,  H04B7/0626 ,  H04B7/0697 ,  H04L1/0618 ,  H04W48/12

摘要： An apparatus and method for closed-loop signaling over multiple channels in a telecommunication system. Channel condition for each channel is obtained, and transmission power loading per channel is determined according to channel condition. The information bit streams is transmitted via the multiple channels over a plurality of transmitter antennas according to the power loading per channel.

摘要翻译： 一种用于电信系统中多个信道的闭环信令的装置和方法。 获得每个通道的通道条件，并根据通道条件确定每个通道的传输功率负载。 根据每个频道的功率负载，通过多个发射机天线经由多个信道来发送信息比特流。

公开(公告)号：US20050095997A1

公开(公告)日：2005-05-05

申请号：US10698104

申请日：2003-10-31

申请人： Jyhchau Horng

发明人： Jyhchau Horng

IPC分类号： H04B1/707 ,  H03C7/02 ,  H04B7/02 ,  H04B7/06 ,  H04B7/26 ,  H04L1/06

CPC分类号： H04L1/0625 ,  H04B7/0626 ,  H04B7/0669

摘要： A method and system that increases transmit diversity gain in a wireless communication system. The system includes a transmitter with 2N transmit antennas, where N is greater than one, and a receiver with one or more receive antenna. The transmitter includes N stages connected serially to each other. The first stage is a symbol level space-time transmit diversity encoder. Each of the next N-1 stages is a block level space-time transmit diversity encoder, for a total of N stages. The last stage is connected to the 2N antennas. The transmitter generates pairs of symbols in a form X1 and X2, The pairs of symbols are encoded by the first stage to produce a 21×21 output matrix C. Then, in each next block level stage n, the 2n-1×2n-1 output matrix of a previous stage is encoded to a 2n×2n output matrix, until a final output matrix has 2N rows of transmit symbols. The transmit symbols of the final output matrix are fed, in a left-to-right order, for each row, in a top-to-bottom order, to a corresponding different one of the 2N transmit antennas. A transmit weight is applied to each transmit symbol before transmitting the transmit symbol.

摘要翻译： 一种在无线通信系统中增加发射分集增益的方法和系统。 该系统包括具有2个N个发射天线的发射机，其中N大于1，以及具有一个或多个接收天线的接收机。 发射机包括N个阶段相互串联连接。 第一级是符号级时空发射分集编码器。 下一个N-1级中的每一个是块级空间 - 时间发射分集编码器，总共N级。 最后一个阶段连接到2个N天线。 发射机以X 1和X 2的形式产生符号对。该对符号由第一级编码以产生2×1 / 输出矩阵C.然后，在每个下一个块级阶段n中，输出矩阵C的输出矩阵C 前一级被编码为输出矩阵，直到最终输出矩阵具有发送符号的2行为N 2。 最终输出矩阵的发送符号以从左到右的顺序从顶部到底部的顺序被馈送到每个行的对应的不同的发送 天线。 在发送发送符号之前，将发送权重应用于每个发送符号。

公开(公告)号：US06839379B1

公开(公告)日：2005-01-04

申请号：US09643278

申请日：2000-08-22

申请人： Jyhchau Horng ,  Jay Bao

发明人： Jyhchau Horng ,  Jay Bao

IPC分类号： H04B1/40 ,  H04B1/707 ,  H04B7/08 ,  H04B7/26 ,  H04L25/02 ,  H04L27/00

CPC分类号： H04B1/0003 ,  H04B1/406 ,  H04B1/707 ,  H04B7/0845 ,  H04B7/2612 ,  H04L25/0228 ,  H04L27/0008

摘要： A digital receiver detects symbols in a baseband signal in a DS-CDMA network. The receiver includes multiple spaced apart antennas. A time-frequency rake receiver is connected to each of the antennas. An interference canceller is connected to each output of each of the rake receiver. Each interference canceller produces a contributing symbol in parallel. A diversity combiner determines a decision symbol corresponding to the baseband signal from the contributing symbols.

摘要翻译： 数字接收机检测DS-CDMA网络中的基带信号中的符号。 接收机包括多个间隔开的天线。 时频雷击接收机连接到每个天线。 干扰消除器连接到每个耙式接收机的每个输出。 每个干扰消除器并行产生贡献符号。 分集组合器从贡献符号确定对应于基带信号的判定符号。

公开(公告)号：US06792034B1

公开(公告)日：2004-09-14

申请号：US09684408

申请日：2000-10-06

申请人： Xiaoyang Lee ,  Jay Bao ,  Jyhchau Horng

发明人： Xiaoyang Lee ,  Jay Bao ,  Jyhchau Horng

IPC分类号： H04B169

CPC分类号： H04B1/7107

摘要： A method reduces interference adaptively in a CDMA receiver. A baseband signal is demodulated to determine target symbols. The baseband signal is also demodulated to estimate interfering symbols. The interfering symbols are modulated to generate a cancellation signal, and the cancellation signal is subtracted from the base band signal to reduce interference in the target symbols.

摘要翻译： 一种在CDMA接收机中自适应地减少干扰的方法。 解调基带信号以确定目标符号。 基带信号也被解调以估计干扰符号。 调制干扰符号以产生消除信号，并且从基带信号中减去抵消信号以减少目标符号中的干扰。

公开(公告)号：US07263132B2

公开(公告)日：2007-08-28

申请号：US10285269

申请日：2002-10-31

申请人： Jyhchau Horng ,  Ling Li

发明人： Jyhchau Horng ,  Ling Li

IPC分类号： H04B7/02

CPC分类号： H04L1/0026 ,  H04B7/0417 ,  H04B7/0615 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0669 ,  H04B7/0697 ,  H04L1/0001 ,  H04L1/0618 ,  H04L25/0202 ,  H04W52/42

摘要： A method for transmitting a stream of data symbols in a multiple-input/multiple-output (MIMO) wireless communications system including Nr transmitting antennas. The stream of data symbols is first demultiplexed into M sub-streams, where M=Nr/2. Then, space-time transmit diversity encoding is applied to each sub-stream to generate a pair of transmit signals. Power is allocated dynamically to each transmit signal of each pair of transmit signals according to a corresponding feedback signal received from a receiver of the transmit signal. The feedback signal including a ratio of magnitude sums of channel coefficients for channels used for the transmit signals.

摘要翻译： 一种用于在包括N个发射天线的多输入/多输出（MIMO）无线通信系统中发送数据符号流的方法。 数据符号流首先被解复用为M个子流，其中M = N / R / 2。 然后，对每个子流应用时空发射分集编码，以产生一对发射信号。 根据从发射信号的接收机接收到的对应的反馈信号，动态地将功率分配给每对发射信号的每个发射信号。 反馈信号包括用于发射信号的信道的信道系数的幅度和的比率。

公开(公告)号：US07092737B2

公开(公告)日：2006-08-15

申请号：US10209306

申请日：2002-07-31

申请人： Jyhchau Horng ,  Jinyun Zhang

发明人： Jyhchau Horng ,  Jinyun Zhang

IPC分类号： H04M1/00

CPC分类号： H04L1/0026 ,  H04B7/0669 ,  H04B7/0673 ,  H04B7/0691 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0071 ,  H04L1/0618

摘要： A method and system transmits a stream of data symbols in a multiple-input/multiple-output wireless communications system that includes M pairs of transmitting antennas. The stream of data symbols are demultiplexed into M sub-streams and adaptively modulated and coded to a maximum data rate while achieving a predetermine performance on an associated channel used to transmit the sub-stream. Space-time transmit diversity encoding is applied to each coded sub-stream to generate two output streams, one output stream for each antenna.

摘要翻译： 一种方法和系统在包括M对发射天线的多输入/多输出无线通信系统中发送数据符号流。 将数据符号流解复用为M个子流，并自适应地调制和编码为最大数据速率，同时实现用于发送子流的相关信道上的预定性能。 空时传输分集编码被应用于每个编码子流以产生两个输出流，每个天线的一个输出流。

公开(公告)号：US07075972B2

公开(公告)日：2006-07-11

申请号：US10223117

申请日：2002-08-19

申请人： Jyhchau Horng ,  Jinyun Zhang

发明人： Jyhchau Horng ,  Jinyun Zhang

IPC分类号： H04B1/69

CPC分类号： H04B1/71072 ,  H04B1/7115

摘要： A multi-path interference canceller cancels interference in a signal received by a receiver in a wideband CDMA communications system. A first stage of the canceller has as input the received signal. Each next stage has as input a delayed version of the input of the previous stage. Each stage includes a first channel estimation and interference generation unit for estimating interference in high-speed signal components of the input signal, and a second channel estimation and interference generation unit for estimating interference in low-speed signal components of the input signal. The interference estimated in the previous stage by the first and second channel estimation and interference generation units is then removed from the input signal of the next stage.

摘要翻译： 多径干扰消除器消除由宽带CDMA通信系统中的接收机接收的信号的干扰。 消除器的第一级具有作为输入的接收信号。 每个下一个阶段都具有前一阶段输入的延迟版本作为输入。 每个级包括用于估计输入信号的高速信号分量中的干扰的第一信道估计和干扰生成单元，以及用于估计输入信号的低速信号分量中的干扰的第二信道估计和干扰生成单元。 然后从第一和第二信道估计和干扰产生单元估计的前一级的干扰从下一级的输入信号中去除。