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公开(公告)号：US07269207B2
公开(公告)日：2007-09-11
申请号：US10359472
申请日：2003-02-05
申请人： Jorma Lilleberg , Kim Rounioja , Thomas A. Sexton
发明人： Jorma Lilleberg , Kim Rounioja , Thomas A. Sexton
IPC分类号： H04B1/00
CPC分类号： H04B1/7105
摘要： A method and device for estimating a target chip index value in a code-division multiple access receiver. The receiver receives signals from a transmitter that uses a plurality of transmitted chips for data transmission through a plurality of multipath channels. As each channel is expressible as a channel impulse response at a given instant in time, the impulse response can be sampled and the samples indexed by a plurality of delay sample indices. The target chip index value can be determined based on the first moment of the delay sample indices over an impulse response.
摘要翻译： 一种用于估计码分多址接收机中的目标码片索引值的方法和装置。 接收机接收来自发射机的信号，该发射机使用多个传输的码片通过多个多径信道进行数据传输。 由于每个信道可以在给定的时刻作为信道脉冲响应来表达，所以脉冲响应可以被采样并且样本由多个延迟采样索引索引。 可以基于脉冲响应上的延迟采样索引的第一时刻来确定目标芯片指标值。
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2.发明授权Method and system for communication over multiple channels in a spread spectrum communication system 失效在扩频通信系统中通过多个信道进行通信的方法和系统
公开(公告)号：US5781583A
公开(公告)日：1998-07-14
申请号：US589177
申请日：1996-01-19
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。
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公开(公告)号：US5778030A
公开(公告)日：1998-07-07
申请号：US616797
申请日：1996-03-15
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。
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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
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）。
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5.发明授权Apparatus, and associated method, for facilitating setting of link parameters to improve communication qualities in a radio communication system 有权装置和相关方法，用于促进链路参数的设置以改善无线电通信系统中的通信质量公开(公告)号：US06510174B1
公开(公告)日：2003-01-21
申请号：US09452084
申请日：1999-11-30
IPC分类号： H04B1702
CPC分类号： H04W28/18 , H04B17/382 , H04W52/0212 , H04W52/0232 , H04W84/04 , Y02D70/1224
摘要： Apparatus, and an associated method, for facilitating selection of link parameters associated with a communication signal transmitted in a radio communication system, such as a GSM (global system for mobile communications) system which provides for GPRS (general packet radio service). Uplink sounding bursts are generated by a mobile station and transmitted to the network infrastructure of the radio communication system. The uplink sounding bursts are analyzed to determine channel conditions upon which the uplink sounding bursts are transmitted. Responsive thereto, selection is made of one or more link parameters of which subsequently-generated GPRS, or other, messages to be transmitted by the mobile station are to be formed. Indications of the selection are provided to the mobile station to permit formation of the subsequently-generated messages in manners which conform with the selected link parameter.
摘要翻译： 装置和相关方法，用于促进与在诸如GSM（全球移动通信系统）系统中提供GPRS（通用分组无线电服务）的无线电通信系统中发送的通信信号相关联的链路参数的选择。 上行探测突发由移动台产生并发送到无线电通信系统的网络基础设施。 分析上行链路探测突发以确定发送上行链路探测突发的信道状况。 响应于此，选择一个或多个链路参数，随后生成的GPRS或其他要由移动台发送的消息将被形成。 选择的指示被提供给移动台，以允许根据所选择的链路参数形成随后生成的消息。
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6.发明授权Method and apparatus for transmission and reception of a transmission rate in a CDMA communication system 失效用于在CDMA通信系统中发送和接收传输速率的方法和装置
公开(公告)号：US6094428A
公开(公告)日：2000-07-25
申请号：US846767
申请日：1997-04-30
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 “。
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7.发明授权Method and apparatus for coherent communication reception in a spread-spectrum communication system 失效用于扩频通信系统中相干通信接收的方法和装置
公开(公告)号：US5619524A
公开(公告)日：1997-04-08
申请号：US396453
申请日：1995-02-28
申请人： Fuyun Ling , Thomas A. Sexton , Gene Bruckert
发明人： Fuyun Ling , Thomas A. Sexton , Gene Bruckert
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 rate estimator determines the rate at which the information was encoded, and the rate information is used to optimize the timing control, frequency offset detector and channel estimator. 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。 速率估计器确定信息被编码的速率，速率信息用于优化定时控制，频率偏移检测器和信道估计器。 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。
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公开(公告)号：US07003055B2
公开(公告)日：2006-02-21
申请号：US10486621
申请日：2002-10-25
申请人： Thomas A. Sexton , Jari Parviainen
发明人： Thomas A. Sexton , Jari Parviainen
IPC分类号： H04L27/06
CPC分类号： H04L25/03318 , H03M13/41 , H04L1/0055 , H04L25/0212 , H04L25/0224 , H04L25/03038 , H04L25/03229 , H04L25/03292 , H04L2025/03401
摘要： A method and apparatus provide a systolic equalizer for Viterbi equalization of an 8-PSK signal distorted by passage through a communication channel. The systolic equalizer architecture is scalable to process, as examples, four, eight and 16 state received signals. An equalizer in accordance with this invention includes a logical arrangement of a plurality of instantiations of locally coupled processing elements forming a systolic array for processing in common received signal samples having distortion induced by passage through a communication channel. The equalizer outputs soft values for input to a decoder, the soft values representing an approximation of maximum a posteriori (MAP) probabilities. A trellis search procedure is employed to reconstruct estimates of a received signal sequence based on a reduced number of states. The reduced number of states is represented by a plurality of groups determined by partitioning a symbol constellation such that there are fewer groups than possible symbols.
摘要翻译： 一种方法和装置提供用于通过通过通信信道失真的8-PSK信号的维特比均衡的收缩均衡器。 收缩均衡器架构可扩展到处理，例如四个，八个和16个状态接收信号。 根据本发明的均衡器包括多个局部耦合的处理元件的实例的逻辑布置，其形成用于在具有通过通信通道的通路引起的失真的公共接收信号样本中进行处理的收缩阵列。 均衡器输出用于输入到解码器的软值，软值表示最大后验（MAP）概率的近似值。 基于减少的状态数量，采用网格搜索过程来重建接收信号序列的估计。 减少数量的状态由通过划分符号星座确定的多个组来表示，使得存在比可能的符号少的组。
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9.发明授权Method, and associated apparatus, for communicating packet data in a radio communication system 失效方法和相关装置，用于在无线电通信系统中传送分组数据公开(公告)号：US06956839B2
公开(公告)日：2005-10-18
申请号：US10133719
申请日：2002-04-26
申请人： Thomas A. Sexton , George Fry
发明人： Thomas A. Sexton , George Fry
摘要： Apparatus, and an associated method, for a radio, such as cellular, communication system to facilitate communications between a mobile station and the network infrastructure. When the mobile station registers in the communication system, a dedicated reverse-link channel is allocated to facilitate communications of packet data between the mobile station and the network infrastructure. By providing dedicated channels, the mobile station becomes functionally connected to the network infrastructure and are analogous to a hard wired connection of a computer in a local area network.
摘要翻译： 用于诸如蜂窝式通信系统之类的无线电装置和相关联的方法，以促进移动台与网络基础设施之间的通信。 当移动站在通信系统中注册时，分配专用的反向链路信道以促进移动站和网络基础设施之间的分组数据的通信。 通过提供专用信道，移动台变得功能上连接到网络基础设施并且类似于局域网中的计算机的硬连线连接。
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10.发明授权Method for receiving a signal in a digital radio frequency communication system 失效用于在数字射频通信系统中接收信号的方法
公开(公告)号：US5818887A
公开(公告)日：1998-10-06
申请号：US687882
申请日：1996-07-26
申请人： Thomas A. Sexton , Fuyun Ling , Kenneth A. Stewart
发明人： Thomas A. Sexton , Fuyun Ling , Kenneth A. Stewart
CPC分类号： H04B1/7085 , H04L7/0331
摘要： The method includes acquiring a signal (501); inputting (502), at a first time, a received symbol to a demodulator having a plurality of outputs to produce a set of early outputs; inputting (504), at a second time, the received symbol to the demodulator to produce a set of on-time outputs; inputting (505), at a third time, the received symbol to the demodulator to produce a set of late outputs; and comparing (506) at least one output in the set of early outputs with at least one output in the set of late outputs to produce a timing measure.
摘要翻译： 该方法包括获取信号（501）; 在第一时间将接收到的符号输入（502）到具有多个输出的解调器以产生一组早期输出; 在第二时间将所接收的符号输入（504）到解调器以产生一组导通时间输出; 在第三时间将接收到的符号输入（505）到解调器以产生一组后期输出; 以及将所述早期输出集合中的至少一个输出与所述一组晚期输出中的至少一个输出进行比较（506）以产生定时测量。
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