公开(公告)号：US5640431A

公开(公告)日：1997-06-17

申请号：US402260

申请日：1995-03-10

申请人： Eugene J. Bruckert ,  Fuyun Ling ,  Thomas A. Sexton

发明人： Eugene J. Bruckert ,  Fuyun Ling ,  Thomas A. Sexton

IPC分类号： H04L27/00 ,  H04L27/233 ,  H04K1/00 ,  H03L7/06

CPC分类号： H04B1/7087 ,  H04B1/707 ,  H04B1/709 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0046 ,  H04L2027/0065 ,  H04L2027/0079

摘要： A method and apparatus for improved offset frequency estimation includes in a first embodiment a receiver (100) for coherent reception of a signal having known reference information, the receiver including an extractor (106) for extracting the reference information (107) from the signal, and an offset frequency estimator (110). The offset frequency estimator (110) includes a filter (121) for filtering the reference information and outputting a filtered reference sequence; a correlator (122, 124) for correlating the filtered reference sequence against a predetermined reference signal to form correlation values; and a peak detector (126) for determining an offset frequency estimate (131) from the correlation values. Other embodiments are also shown.

摘要翻译： 一种用于改进的偏移频率估计的方法和装置包括在第一实施例中用于相干接收具有已知参考信息的信号的接收机（100），该接收机包括用于从信号中提取参考信息（107）的提取器（106） 和偏移频率估计器（110）。 偏移频率估计器（110）包括滤波器（121），用于对参考信息进行滤波并输出滤波后的参考序列; 相关器（122,124），用于将滤波的参考序列与预定的参考信号相关，以形成相关值; 和用于根据相关值确定偏移频率估计（131）的峰值检测器（126）。 还示出了其他实施例。

公开(公告)号：US5822359A

公开(公告)日：1998-10-13

申请号：US323944

申请日：1994-10-17

申请人： Eugene J. Bruckert ,  Shawn B. Dempster ,  Fuyun Ling

发明人： Eugene J. Bruckert ,  Shawn B. Dempster ,  Fuyun Ling

IPC分类号： H04B7/26 ,  H04B1/707

CPC分类号： H04B7/2628

摘要： A method and apparatus is provided to facilitate coherent communication in a random access channel. In encoding, reference symbols are inserted into a stream of access channel message data symbols and appended to a synchronization message to form a reference coded access channel transmission. Subsequently, the access channel transmission is prepared for transmission over a communication channel by being spread with a spreading code. In decoding, a known synchronization sequence is correlated with a received communication signal to generate a correlation peak when a synchronization message is present. The received communication signal is despread with a spreading code to derive a stream of reference samples and data samples. A channel response is determined from the correlation peak and revised based on estimates derived from the stream of reference samples. Finally, an estimated data symbol is detected from the stream of data samples by utilizing the revised channel response.

摘要翻译： 提供了一种用于促进随机接入信道中的相干通信的方法和装置。 在编码中，将参考符号插入到访问信道消息数据符号流中，并附加到同步消息以形成参考编码接入信道传输。 随后，通过利用扩展码扩展来准备通过通信信道传输的接入信道传输。 在解码中，当存在同步消息时，已知的同步序列与所接收的通信信号相关，以产生相关峰值。 接收到的通信信号用扩展码解扩，以导出参考样本和数据样本流。 从相关峰确定信道响应并根据从参考样本流导出的估计进行修正。 最后，通过利用经修改的信道响应从数据样本流中检测估计的数据符号。

公开(公告)号：US5809020A

公开(公告)日：1998-09-15

申请号：US617006

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 ,  H04B2201/70701

摘要： A method (300) for adaptively adjusting 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 pilot signals (178, 182, 186) are generated responsive to the representation (172) of a desired RF signal (166). Each of a plurality of weighting coefficients (188, 190, 192) is determined responsive to more than one of the plurality of pilot signals (178, 182, 186).

摘要翻译： 一种用于在码分多址（CDMA）无线电接收机（100）中自适应地调整加权系数（188,190,192）的方法（300）。 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）产生多个导频信号（178,182,186）。 多个加权系数（188,192,192）中的每一个响应多于一个导频信号（178,182,186）来确定。

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：US5659573A

公开(公告)日：1997-08-19

申请号：US317501

申请日：1994-10-04

申请人： Eugene J. Bruckert ,  Fuyun Ling

发明人： Eugene J. Bruckert ,  Fuyun Ling

IPC分类号： H04B1/707 ,  H04B1/7087 ,  H04B1/7117 ,  H04J3/06 ,  H04L25/02 ,  H04L27/227 ,  H04K1/00 ,  H04L7/00

CPC分类号： H04B1/7087 ,  H04B1/707 ,  H04J3/0605 ,  H04L25/0202 ,  H04L27/2276 ,  H04B1/7117 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A method and apparatus is provided for facilitating coherent communication reception. A received reference symbol coded spread spectrum communication signal is despread with a spreading code to derive a stream of reference samples and a stream of data samples. The channel response is estimated by utilizing the stream of reference samples. An offset frequency detector determines an offset to be applied to the received signal via a frequency locked loop, while a timing control compensates for slow timing drift and fast fading based on power estimates derived from the stream of reference samples and/or the stream of data samples. A slot detector controls gates which optimize the timing control and frequency offset detector outputs from the various timing branches. Thus an improved detection of estimated data symbols from the stream of received data samples is provided.

摘要翻译： 提供了一种用于促进相干通信接收的方法和装置。 接收到的参考符号编码的扩展频谱通信信号用扩展码进行解扩，以导出参考样本流和数据采样流。 通过利用参考样本流来估计信道响应。 偏移频率检测器通过频率锁定环来确定要施加到接收信号的偏移，而定时控制基于从参考样本流和/或数据流导出的功率估计来补偿慢定时漂移和快衰落 样品。 时隙检测器控制门，其优化来自各种定时分支的定时控制和频率偏移检测器输出。 因此，提供了从接收的数据样本流中对估计数据符号的改进的检测。

公开(公告)号：US5305468A

公开(公告)日：1994-04-19

申请号：US853211

申请日：1992-03-18

申请人： Eugene J. Bruckert ,  Fuyun Ling

发明人： Eugene J. Bruckert ,  Fuyun Ling

IPC分类号： H04B7/005

CPC分类号： H04W52/223 ,  H04W52/362 ,  H04W52/367 ,  H04W52/60

摘要： The power of a received signal is measured at a base station. This measured power is used to predict a future power level of the received signal and from that to determine the appropriate power adjustment command. The power adjustment command is then sent to the transceiver.

摘要翻译： 在基站测量接收信号的功率。 该测量的功率用于预测接收信号的未来功率电平，并从中确定适当的功率调整命令。 然后将功率调整命令发送到收发器。

公开(公告)号：US5781583A

公开(公告)日：1998-07-14

申请号：US589177

申请日：1996-01-19

申请人： Eugene J. Bruckert ,  Thomas A. Sexton

发明人： Eugene J. Bruckert ,  Thomas A. Sexton

IPC分类号： H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04L1/00 ,  H04Q7/38 ,  H04B1/707 ,  H04J13/04

CPC分类号： H04L1/0002 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04B2201/70703

摘要： A method for transmitting a communication signal (20) having a data rate over a plurality of spread spectrum traffic channels includes determining a first number of traffic channels required to transmit the communication signal at the data rate, and determining a second number of traffic channels (502) available for transmitting the communication signal (20). In response to a comparison of the first number of traffic channels to the second number of traffic channels, a first traffic channel (54) for transmitting a first portion of the communication signal (50, 51) and a second traffic channel (56) for transmitting a second portion of the communication signal (52, 53) are selected from the. second number of traffic channels (502). The selection of the first traffic channel (54) is non deterministic of the selection of the second traffic channel (56).

摘要翻译： 一种用于在多个扩频业务信道上发送具有数据速率的通信信号（20）的方法包括确定以数据速率发送通信信号所需的第一数量的业务信道，以及确定第二数量的业务信道（ 502），可用于发送通信信号（20）。 响应于第一数量的业务信道与第二数量业务信道的比较，用于发送通信信号（50,51）的第一部分的第一业务信道（54）和用于 从...中选择发送通信信号（52,53）的第二部分。 第二数量的业务信道（502）。 第一业务信道（54）的选择对于第二业务信道（56）的选择是不确定的。

公开(公告)号：US5778030A

公开(公告)日：1998-07-07

申请号：US616797

申请日：1996-03-15

申请人： Eugene J. Bruckert ,  Thomas A. Sexton ,  Robert T. Love ,  William R. Bayer

发明人： Eugene J. Bruckert ,  Thomas A. Sexton ,  Robert T. Love ,  William R. Bayer

IPC分类号： G01S11/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00 ,  H04L25/06

CPC分类号： H04W52/12 ,  G01S11/06 ,  H04W52/282

摘要： Power control in a spread spectrum communication system takes place by determining a speed of a remote unit (405) and assigning as a power-control threshold a target threshold based on the determined speed (410). An instantaneous threshold value is created (415) based on frame-quality information and the target threshold. An energy of a power-control group transmitted (430) from a remote unit is compared to the instantaneous threshold value and a power-adjustment command is determined. The power-adjustment command is transmitted to the remote unit instructing the remote unit to adjust its power accordingly.

摘要翻译： 通过确定远程单元的速度（405）并基于所确定的速度（410）将作为功率控制阈值分配为目标阈值来进行扩频通信系统中的功率控制。 基于帧质量信息和目标阈值创建瞬时阈值（415）。 将远程单元发送的功率控制组（430）的能量与瞬时阈值进行比较，并确定功率调整命令。 功率调整命令被发送到远程单元，指示远程单元相应地调整其功率。

公开(公告)号：US6094428A

公开(公告)日：2000-07-25

申请号：US846767

申请日：1997-04-30

申请人： Eugene J. Bruckert ,  Thomas A. Sexton

发明人： Eugene J. Bruckert ,  Thomas A. Sexton

IPC分类号： H04B7/26 ,  H04J3/06 ,  H04J11/00 ,  H04Q7/38 ,  H04J13/00

CPC分类号： H04J3/0605 ,  H04B7/264

摘要： In a communication system where a continuous reverse channel transmission is utilized by redundant transmission of Walsh codes, a current transmission rate is modulated onto Walsh code polarity. In particular, a remote unit operating at a particular transmission rate utilizing a continuous reverse channel transmission modulates the transmission rate by setting the polarity of each Walsh code depending upon the current or future data traffic channel rate. In communication systems where a Reference Coherent (RC) type transmission is utilized, the particular transmission rate is modulated onto the reference symbols (501-517) by setting the reference symbols (501-517) equal to a binary "1" or "0".

摘要翻译： 在通过沃尔什码的冗余传输利用连续反向信道传输的通信系统中，将当前传输速率调制到沃尔什码极性。 特别地，利用连续反向信道传输以特定传输速率工作的远程单元根据当前或将来的数据业务信道速率来设置每个沃尔什码的极性来调制传输速率。 在使用参考相干（RC）类型传输的通信系统中，通过将参考符号（501-517）设置为等于二进制“1”或“0”来将特定传输速率调制到参考符号（501-517）上 “。

公开(公告)号：US5903844A

公开(公告)日：1999-05-11

申请号：US794708

申请日：1997-02-04

申请人： Eugene J. Bruckert ,  Stephen H. Sanders, III

发明人： Eugene J. Bruckert ,  Stephen H. Sanders, III

IPC分类号： H04W64/00 ,  H04Q7/20

CPC分类号： H04W64/00

摘要： The location of a remote unit (113) within a wireless communication system (100) is determined by all base stations (101) within the wireless communication system (100) initiating a first page (wide-area location page) that is broadcast to the remote unit (113) over a paging channel. The serving and neighbor base stations are determined from the remote unit's (113) response to the wide-area location page, and those base stations are instructed to tune receiving elements to obtain data that will be transmitted by the remote unit (113) during location. A second message (Location Page Message) is then broadcast to the remote unit (113) via the serving base station (101). The Location Page Message instructs the remote unit (113) to periodically transmit a known Remote Unit Location Message (RULM) with increasing power levels for a predetermined number of times so that the remote unit's (113) location can be achieved.

摘要翻译： 远程单元（113）在无线通信系统（100）内的位置由无线通信系统（100）内的所有基站（101）确定，发起第一页（广域位置页），其广播到 远程单元（113）通过寻呼信道。 从遥控单元（113）对广域位置页面的响应确定服务和邻近基站，并且指示那些基站调谐接收元件以获得在位置期间由远程单元（113）发送的数据 。 然后，经由服务基站（101）将第二消息（位置页消息）广播到远程单元（113）。 位置页消息指示远程单元（113）周期性地以增加的功率级别发送已知的远程单元位置消息（RULM）预定次数，从而可以实现远程单元（113）的位置。