公开(公告)号：US5881093A

公开(公告)日：1999-03-09

申请号：US798577

申请日：1997-02-10

申请人： Michael M. Wang ,  Fuyun Ling

发明人： Michael M. Wang ,  Fuyun Ling

IPC分类号： H03M13/23 ,  H03M13/27 ,  H03M13/29 ,  H04B15/00 ,  H04L1/00 ,  H04L1/08

CPC分类号： H04L1/0059 ,  H03M13/271 ,  H04L1/0071 ,  H04L1/08

摘要： A block interleaver (212) suitable for communication over fading channels with convolutionally coded signals as input is disclosed. The block interleaver (212) implements multiple interleaving distances which are matched to the particular convolutional code to provide better performance than conventional block interleavers.

摘要翻译： 公开了一种适于在具有卷积编码信号作为输入的衰落信道上进行通信的块交织器（212）。 块交织器（212）实现与特定卷积码匹配的多个交织距离，以提供比常规块交织器更好的性能。

公开(公告)号：US5878098A

公开(公告)日：1999-03-02

申请号：US672155

申请日：1996-06-27

申请人： Michael M. Wang ,  Fuyun Ling ,  Terry M. Schaffner

发明人： Michael M. Wang ,  Fuyun Ling ,  Terry M. Schaffner

IPC分类号： H04B1/74 ,  H03M13/23 ,  H03M13/41 ,  H04B17/00 ,  H04J13/00 ,  H04L1/00 ,  H04L27/00

CPC分类号： H04L1/0054 ,  H03M13/3961 ,  H03M13/41 ,  H04L1/0046 ,  H04B2201/70705

摘要： A method of determining a rate associated with a received signal including the steps of detecting the received signal (40); decoding the received signal at a first rate, determining a first path metric associated with the first rate, decoding the received signal at a second rate, and determining a second path metric associated with the second rate (44); calculating a plurality of discriminant functions based on the first and second path metrics (46); comparing at least one of the plurality of discriminant functions to a first predetermined value (48); and selecting one of the first and second rates as a determined rate based on the comparison.

摘要翻译： 一种确定与接收信号相关联的速率的方法，包括检测接收信号的步骤; 以第一速率对接收到的信号进行解码，确定与第一速率相关联的第一路径度量，以第二速率解码接收到的信号，以及确定与第二速率相关联的第二路径度量（44）。 基于所述第一和第二路径量度（46）计算多个判别函数; 将所述多个判别函数中的至少一个与第一预定值（48）进行比较; 并且基于所述比较来选择所述第一和第二速率中的一个作为确定的速率。

公开(公告)号：US5812542A

公开(公告)日：1998-09-22

申请号：US617462

申请日：1996-03-18

申请人： Eugene J. Bruckert ,  Fuyun Ling

发明人： Eugene J. Bruckert ,  Fuyun Ling

IPC分类号： H04B1/712 ,  H04L1/06 ,  H04B7/216

CPC分类号： H04B1/712 ,  H04L1/06

摘要： A method (250) determines weighting coefficients (188, 190, 192) in a code division multiple access (CDMA) radio receiver (100). A representation (172) of a desired RF signal (166) is received (108, 124, 127). A plurality of data signals (176, 180, 184) are generated responsive to the representation (172) of a desired RF signal (166). A plurality of pilot signals (178, 182, 186) are generated responsive to the first representation (172) of a desired RF signal (166). A total received signal power (174) is measured (128). A plurality of weighting coefficients (188, 190, 192) are determined responsive to the plurality of data signals (176, 180, 184), the plurality of pilot signals (178, 182, 186) and the total received signal power (174).

摘要翻译： 方法（250）确定码分多址（CDMA）无线电接收机（100）中的加权系数（188,190,192）。 接收期望RF信号（166）的表示（172）（108,124,127）。 响应于所需RF信号（166）的表示（172）产生多个数据信号（176,180,184）。 响应于所需RF信号（166）的第一表示（172）产生多个导频信号（178,182,186）。 测量总接收信号功率（174）（128）。 响应于多个数据信号（176,180,184），多个导频信号（178,182,186）和总接收信号功率（174）确定多个加权系数（188,190,192） 。

公开(公告)号：US5687198A

公开(公告)日：1997-11-11

申请号：US582691

申请日：1996-01-04

申请人： Thomas A. Sexton ,  Fuyun Ling

发明人： Thomas A. Sexton ,  Fuyun Ling

IPC分类号： H04L27/18 ,  H04B1/10 ,  H04B7/26 ,  H04L7/02 ,  H04L25/02 ,  H04B1/76

CPC分类号： H04L7/0062 ,  H04L25/0202 ,  H04L25/0214 ,  H04L25/0236

摘要： A receiver (200, 400) implements improved channel estimation. The receiver (200, 400) demodulates a transmitted signal, and makes an initial channel estimate (115). The receiver (200, 400) then makes a hard decision (301) as to whether the channel estimate was correct and groups samples representing the decision. A vector sum of the group of samples is computed (302), and each sample is compared to the vector sum (303). The sample having the largest projection on the vector sum is retained (304), and the other samples are considered noise, and are thus discarded (305). After obtaining a predetermined number of retained samples (306), the retained samples are used to generate an new channel estimate (226). Since the noisy estimates are discarded, the new channel estimate (226) contains fewer errors than the initial channel estimate (115). The new channel estimate (226) is used to generate decoded data (250).

摘要翻译： 接收机（200,400）实现改进的信道估计。 接收机（200,400）对发送的信号进行解调，并进行初始信道估计（115）。 接收机（200,400）然后作出关于信道估计是否正确以及表示该决定的组样本的硬判决（301）。 计算样本组的矢量和（302），并将每个样本与矢量和（303）进行比较。 保留矢量和上具有最大投影的样本（304），其他样本被认为是噪声，因此被丢弃（305）。 在获得预定数量的保留样本（306）之后，使用保留的样本来产生新的信道估计（226）。 由于噪声估计被丢弃，所以新信道估计（226）包含的误差小于初始信道估计（115）。 新信道估计（226）用于生成解码数据（250）。

公开(公告)号：US5675344A

公开(公告)日：1997-10-07

申请号：US671889

申请日：1996-06-28

申请人： Leon Tong ,  Fuyun Ling

发明人： Leon Tong ,  Fuyun Ling

IPC分类号： G01S5/14 ,  G01S19/48 ,  H04W64/00 ,  G01S3/02

CPC分类号： H04W64/00 ,  G01S5/14

摘要： The method includes receiving (404) by a first base station (212) a signal (215) transmitted from the mobile station (216); demodulating (406) the signal by the first base station (212) to form a demodulated signal; remodulating (408) at least a portion of the demodulated signal to form a reference signal; receiving (412) by the first base station (212) and a second base station (210, 214) a retransmitted signal (217); comparing (414, 16), by the first base station (212), the retransmitted signal (217) with the reference signal to determine a first delay; comparing (414, 416), by the second base station (210, 214), the retransmitted second signal (217) with the reference signal to determine a second delay; and based on the first and second delays, determining (420) a location of the mobile station (216).

摘要翻译： 该方法包括由第一基站（212）接收（404）从移动站（216）发送的信号（215）。 由第一基站（212）解调（406）信号以形成解调信号; 重新调制（408）所述解调信号的至少一部分以形成参考信号; 由第一基站（212）和第二基站（210,214）接收（412）重发信号（217）; 通过所述第一基站（212）将所述重发信号（217）与所述参考信号进行比较（414,16）以确定第一延迟; 通过所述第二基站（210,214）将重发的第二信号（217）与参考信号进行比较（414,416）以确定第二延迟; 并且基于第一和第二延迟，确定（420）移动台（216）的位置。

公开(公告)号：US5412686A

公开(公告)日：1995-05-02

申请号：US123452

申请日：1993-09-17

申请人： Fuyun Ling

发明人： Fuyun Ling

IPC分类号： H04B1/50 ,  H04B7/005 ,  H04B7/26 ,  H04B17/00 ,  H04J13/04 ,  H04L27/30

CPC分类号： H04W52/04 ,  H04B17/327

摘要： A method and apparatus is provided for estimating signal power. This is accomplished by demodulating a received communication signal to derive a stream of samples. These samples may consist of either reference samples, data samples, or a combination thereof. An estimate of the power of the received communication signal is then generated as a function of the stream of samples. The signal power estimate may, for example, be used in a power control algorithm by setting a power control indicator in response to a comparison between the signal power estimate and a predetermined threshold. Subsequently, the power control indicator is transmitted over a communication channel to another communication unit. The communication unit detects a power control indicator within a signal received from over the communication channel and adjusts a particular signal transmission power of a signal transmitter in response to the detected power control indicator.

摘要翻译： 提供了一种用于估计信号功率的方法和装置。 这是通过解调所接收的通信信号来导出样本流来实现的。 这些样品可以由参考样品，数据样品或其组合组成。 然后根据样本流生成接收到的通信信号的功率的估计。 例如，信号功率估计可以通过响应于信号功率估计和预定阈值之间的比较设置功率控制指示符而在功率控制算法中使用。 随后，通过通信信道将功率控制指示符发送到另一个通信单元。 通信单元检测从通信信道接收到的信号内的功率控制指示符，并响应于检测到的功率控制指示器调整信号发射机的特定信号发射功率。

公开(公告)号：US5406552A

公开(公告)日：1995-04-11

申请号：US181278

申请日：1994-01-13

申请人： Guozhu Long ,  Fuyun Ling ,  M. Vedat Eyuboglu

发明人： Guozhu Long ,  Fuyun Ling ,  M. Vedat Eyuboglu

IPC分类号： H04B3/23 ,  H04M1/00

CPC分类号： H04B3/235 ,  H04B3/232

摘要： A device and method utilize a linear feedback/feedforward configuration to estimate and cancel a listener echo wherein equalizer (202) and listener echo cancellation (204 and 208) units are jointly updated, allowing determination of an error signal (204 and 208), in place of the former method of separate error signal determination for each of an equalizer and a listener echo canceller. An improved phase-correction scheme is utilized to compensate the frequency offset in the listener echo. The relationship between the listener echo and talker far echo is utilized to facilitate the listener echo cancellation.

摘要翻译： 设备和方法利用线性反馈/前馈配置来估计和消除收听者回声，其中均衡器（202）和收听者回声消除（204和208）单元被联合更新，允许确定误差信号（204和208） 对于均衡器和收听回波消除器中的每一个，单独的误差信号确定的前一种方法的位置。 利用改进的相位校正方案来补偿收听者回波中的频率偏移。 听众回声和讲话者远端回声之间的关系被用来促进听众回声消除。

公开(公告)号：US5199046A

公开(公告)日：1993-03-30

申请号：US756741

申请日：1991-09-09

申请人： Fuyun Ling

发明人： Fuyun Ling

IPC分类号： H04B14/04 ,  H03H17/06 ,  H04L7/00 ,  H04L7/02

CPC分类号： H04L7/0029 ,  H03H17/0628 ,  H04L7/005 ,  H04L7/0041 ,  H04L7/0091

摘要： A first and second digital rate converter device and method provides for synchronization between a first digital sample sequence and a second digital output sequence related to the first digital sample sequence for a rate converter pair (501, 511; 601, 611). The method typically utilizes at least one of: queue monitoring and zero-crossing with resetting to minimize sampling timing error.

摘要翻译： 第一和第二数字速率转换器装置和方法提供用于速率转换器对（501,511; 601,611）的与第一数字采样序列相关的第一数字采样序列和第二数字输出序列之间的同步。 该方法通常利用以下至少一种：具有重置的队列监视和过零以最小化采样定时误差。

公开(公告)号：US5159608A

公开(公告)日：1992-10-27

申请号：US751372

申请日：1991-08-28

申请人： David D. Falconer ,  Fuyun Ling

发明人： David D. Falconer ,  Fuyun Ling

IPC分类号： H03M13/23 ,  H03M13/27 ,  H03M13/41 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L23/02

CPC分类号： H04L23/02 ,  H03M13/23 ,  H03M13/271 ,  H03M13/41 ,  H04J13/004 ,  H04J13/12

摘要： A method and apparatus is provided for encoding and decoding. In encoding, bits (202) are encoded (204) into symbols (206) such that maximum likelihood decoding is facilitated. Groups of symbols (206) are translated by either interleaving by group each group within a block (208) and subsequently deriving an orthogonal code from each group (212) or deriving an orthogonal code from each group and subsequently interleaving by code each code within a block.In decoding, groups of samples (228, 229) are transformed by either generating metrics and index symbols (242) for each group of samples (232, 234, 236, 238, 240) are subsequently deinterleaving by group each group of metrics within a block (244) or deinterleaving by group each group of samples within a block and subsequently generating metrics and index symbols for each deinterleaved group of samples. Each metric represents the confidence that a group of samples is a particular orthogonal code. Subsequently, maximum likelihood decoding (266) generates an estimated bit (268) from the index symbols and metrics (260).

摘要翻译： 提供了一种用于编码和解码的方法和装置。 在编码中，比特（202）被编码（204）到符号（206）中，从而便于最大似然解码。 符号组（206）通过组块（208）中的每个组交织并随后从每个组（212）导出正交码或从每个组中导出正交码并随后通过代码中的每个代码在一个 块。 在解码中，通过对每组样本（232,234,236,238,240）生成度量和索引符号（242）来变换样本组（228,229），随后通过组对每组样本中的每组度量进行解交织 块（244）或块中的每组样本对每组样本进行解交织，并随后为每个解交织的样本组生成度量和索引符号。 每个度量表示一组样本是特定正交码的置信度。 随后，最大似然解码（266）从索引符号和度量（260）生成估计位（268）。

公开(公告)号：US5142551A

公开(公告)日：1992-08-25

申请号：US662049

申请日：1991-02-28

申请人： David E. Borth ,  Phillip D. Rasky ,  Fuyun Ling ,  M. Vedat Eyuboglu

发明人： David E. Borth ,  Phillip D. Rasky ,  Fuyun Ling ,  M. Vedat Eyuboglu

IPC分类号： H03H15/00 ,  H03H17/00 ,  H03H21/00 ,  H03M13/00 ,  H03M13/23 ,  H04B1/10 ,  H04B1/12 ,  H04B3/14 ,  H04B7/005

CPC分类号： H03M13/00 ,  H04B7/005

摘要： A signal weighting system for associating a confidence level with portions of a communication signal transmitted upon a multipath channel and received by a receiver. A signal received by the receiver is equalized by an equalizer circuit, such as a maximum likelihood sequence estimator, and the equalized signal generated thereby is supplied to an adaptive filter which is synthesizes portions of the multipath channel. The signal received by the receiver is altered responsive to values of a filtered, equalized signal generated by the adaptive filter.

摘要翻译： 一种信号加权系统，用于将置信水平与在多路径信道上发送并由接收机接收的通信信号的部分相关联。 由接收机接收到的信号由诸如最大似然序列估计器的均衡器电路均衡，并且由此生成的均衡信号被提供给合成多径信道的部分的自适应滤波器。 响应于由自适应滤波器产生的经滤波的均衡信号的值，接收机接收到的信号被改变。