公开(公告)号：US07379513B2

公开(公告)日：2008-05-27

申请号：US10478593

申请日：2001-05-23

申请人： Chao Wang, legal representative ,  Mohamed El-Tarkhuni ,  Zhi Ding ,  Yuri S. Shinakov ,  Alexandre M Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

发明人： Rui R. Wang

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04L25/022 ,  H04L25/0236 ,  H04L25/024

摘要： An iterative arrangement of channel estimator (12), a Kalman filter unit (14), and a soft demodulator (16) is provided for producing an estimate of complex gain of a CDMA communications channel carrying data and pilot channels, and demodulated data of the data channel. An initial channel estimate is produced by the estimator (12) using only the low-power pilot channel. This later is improved by the iterative process using the data channel. The complex gains is represented by a sum of sinusoidal signals with different frequencies and randomly variable amplitude and phase.

摘要翻译： 提供信道估计器（12），卡尔曼滤波器单元（14）和软解调器（16）的迭代布置，用于产生携带数据和导频信道的CDMA通信信道的复数增益估计，以及解调数据 数据通道。 由估计器（12）仅使用低功率导频信道产生初始信道估计。 这通过使用数据通道的迭代过程得到改进。 复数增益由具有不同频率和随机可变幅度和相位的正弦信号之和表示。

公开(公告)号：US07843888B1

公开(公告)日：2010-11-30

申请号：US10432216

申请日：2000-11-22

申请人： Rui R. Wang ,  Chao Wang, legal representative ,  Ming Jia ,  Yuri S. Shinakov ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

发明人： Rui R. Wang ,  Ming Jia ,  Yuri S. Shinakov ,  Alexandre M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

IPC分类号： H04W4/00 ,  H03M13/00

CPC分类号： H04L1/065 ,  H04L1/005 ,  H04L1/006 ,  H04L1/0066

摘要： Space-time diversity using a plurality of transmit antennas is provided with a turbo coding arrangement comprising two recursive systematic convolutional coders, to one of which input bits are supplied directly and to the other of which the information bits are supplied after interleaving of bit groups for respective symbol intervals. Symbols produced by the coders and comprising systematic and parity information are supplied to paths to the antennas alternately in successive symbol intervals to provide the space-time diversity. Arrangements are described for 2 and 4 antennas and for various convolutional codes, and an iterative decoder is also described.

摘要翻译： 使用多个发射天线的时空分集被提供有包括两个递归系统卷积编码器的turbo编码装置，其中一个输入比特被直接提供，并且另一个是在对比特组进行交织之后提供信息比特， 各自的符号间隔。 由编码器产生并且包括系统和奇偶信息的符号在连续符号间隔中被交替地提供给天线的路径以提供时空分集。 对于2和4天线以及各种卷积码描述了安排，并且还描述了迭代解码器。

公开(公告)号：US07327713B2

公开(公告)日：2008-02-05

申请号：US09950776

申请日：2001-09-13

申请人： Chao Wang, legal representative ,  Wen Tong ,  Philip Thomas ,  Yuri S. Shinakov ,  Alexandere M. Chloma ,  Mikhail G. Bakouline ,  Vitali B. Kreindeline

发明人： Rui R. Wang, deceased

IPC分类号： H04B7/216

CPC分类号： H04B1/71075 ,  H04B1/7115 ,  H04B1/712

摘要： For each user in a multi-user detection arrangement in a CDMA communications system, a detector (80) provides a limiting function (88) responsive to a combined signal to produce a detection signal, having any of at least three possible values, for supply to a signal regenerator, regenerated signals being subtracted from a received signal in successive detection iterations of the multi-user detection arrangement. A code correlated signal is supplied via an inverse hyperbolic tangent function (84), or is multiplied by a multiplier inverse to an iteration index, to produce a derived signal. The derived signal is added (86) to a representation of a detection result stored from a previous iteration to produce the combined signal. The limiting function can comprise a hyperbolic tangent function.

摘要翻译： 对于CDMA通信系统中的多用户检测装置中的每个用户，检测器（80）响应于组合信号提供限制功能（88）以产生具有至少三个可能值中的任何一个用于供应的检测信号 到信号再生器，在多用户检测装置的连续检测迭代中从接收信号中减去再生信号。 代码相关信号通过反双曲正切函数（84）提供，或乘以与迭代索引相反的乘数，以产生导出信号。 将导出信号（86）加到从先前迭代存储的检测结果的表示中以产生组合信号。 限制功能可以包括双曲正切函数。