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1. 发明授权

US5838267A Method and apparatus for encoding and decoding digital information 失效
标题翻译：用于对数字信息进行编码和解码的方法和装置
公开(公告)号：US5838267A
公开(公告)日：1998-11-17
申请号：US728158
申请日：1996-10-09
申请人： Yi-Pin Eric Wang , Sandeep Chennakeshu , Paul W. Dent , Kumar Balachandran
发明人： Yi-Pin Eric Wang , Sandeep Chennakeshu , Paul W. Dent , Kumar Balachandran
IPC分类号： H03M13/37 , G06F11/10 , H03M13/00 , H03M13/29 , H04L1/00 , H04L1/06 , H04L1/18 , G06F11/00
CPC分类号： H04L1/0057 , H03M13/00 , H03M13/2927 , H03M13/293 , H03M13/2942 , H03M13/3769 , H04L1/06 , H03M13/1505 , H03M13/6306 , H04L1/0071
摘要： A method for encoding and decoding the digital information sequence uses a combination of two block codes to simultaneously correct and detect errors. The information sequence is encoded by a first stage of the encoder to produce an information code word including an information vector and a primary redundancy vector. The primary redundancy vector is encoded in a second stage of the encoder to obtain a redundancy code word. The information code word and redundancy code word are interleaved and transmitted to the receiver. At the receiver, the information code word and redundancy code word are decoded in a first stage of the decoder to obtain a first estimate of the information code word. The first estimate of the information code word is decoded in the second stage of the decoder to produce a second estimate of the information code word. The distance between the first and second estimates of the information code word is evaluated. If the distance is more than one, the received code word is erased. In another embodiment, the information sequence is repeated at the receiver. Each repetition includes a parity check resulting from the same code or from different codes. The received information vectors are selectively combined and then individually decoded using the individual parity vectors to generate multiple estimates of the information sequence. The estimates are then combined using hard or soft combining techniques.
摘要翻译：用于对数字信息序列进行编码和解码的方法使用两个块码的组合来同时校正和检测错误。信息序列由编码器的第一级编码，以产生包括信息向量和主冗余向量的信息码字。主冗余矢量被编码在编码器的第二级以获得冗余码字。信息码字和冗余码字被交织并发送到接收机。在接收机处，信息码字和冗余码字在解码器的第一级解码，以获得信息码字的第一估计。在解码器的第二级解码信息码字的第一估计，以产生信息码字的第二估计。评估信息码字的第一和第二估计之间的距离。如果距离大于1，则接收到的代码字被擦除。在另一个实施例中，在接收器处重复信息序列。每个重复都包括由相同代码或不同代码产生的奇偶校验。选择性地组合所接收的信息向量，然后使用各个奇偶校验向量单独解码以生成信息序列的多个估计。然后使用硬或软组合技术组合估计值。

2. 发明授权

US5918174A Circuitry and method for initiating communication between communication stations of a radio communication system 失效
标题翻译：用于发起无线电通信系统的通信站之间的通信的电路和方法
公开(公告)号：US5918174A
公开(公告)日：1999-06-29
申请号：US626182
申请日：1996-03-29
申请人： Sandeep Chennakeshu , Yi-Pin Eric Wang , Kumar Balachandran
发明人： Sandeep Chennakeshu , Yi-Pin Eric Wang , Kumar Balachandran
IPC分类号： H04B7/185 , H04W68/00 , H04W68/02 , H04W88/18
CPC分类号： H04B7/18558 , H04W68/00 , H04W68/02 , H04W88/185
摘要： A method and associated circuitry for initiating communication between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication system. When communication is to be initiated, a paging signal is transmitted by a network station to the user terminal. When the user terminal detects the paging signal, an acknowledgment signal is generated by the user terminal and encoded to increase the margin of the acknowledgment signal. An increased-margin acknowledgment signal acknowledging reception of the paging signal is transmitted to facilitate communication of the acknowledgment signal back to the network station.
摘要翻译：一种用于发起无线电通信系统（诸如卫星蜂窝通信系统）的网络站和用户终端之间的通信的方法和相关电路。当要发起通信时，网络站向用户终端发送寻呼信号。当用户终端检测到寻呼信号时，用户终端产生一个确认信号并进行编码以增加确认信号的余量。发送确认寻呼信号的接收的增加的裕度确认信号以促进确认信号的通信回到网络站。

3. 发明授权

US06415154B1 METHOD AND APPARATUS FOR COMMUNICATING AUXILLIARY INFORMATION AND LOCATION INFORMATION BETWEEN A CELLULAR TELEPHONE NETWORK AND A GLOBAL POSITIONING SYSTEM RECEIVER FOR REDUCING CODE SHIFT SEARCH TIME OF THE RECEIVER 有权
标题翻译：用于通信蜂窝电话网络和全球定位系统接收器之间的辅助信息和位置信息的方法和装置，用于减少代码移位接收器的搜索时间
公开(公告)号：US06415154B1
公开(公告)日：2002-07-02
申请号：US09167077
申请日：1998-10-06
申请人： Yi-Pin Eric Wang , Sandeep Chennakeshu
发明人： Yi-Pin Eric Wang , Sandeep Chennakeshu
IPC分类号： H04Q720
CPC分类号： G01S5/0036 , G01S19/25 , G01S19/37 , G01S2205/008
摘要： A method and apparatus for communicating auxiliary information between a cellular telephone network and a GPS receiver positioned within a mobile station and identifying the location of the mobile station. A dedicated channel between the mobile station and the network is assigned by the network and uplink timing between the mobile station and the network is adjusted. The network requests auxiliary information and also requests the GPS receiver to perform a GPS code shift search at a common reference time. Upon receiving the auxiliary information, the network transmits the auxiliary information to the GPS receiver which then performs the GPS code shift search. The GPS receiver incorporates a bank of correlators and accumulators to perform multiple parallel searches for various Doppler frequency shifts resulting from a moving GPS receiver. The mobile station subsequently transmits the location information to the cellular telephone network.
摘要翻译：一种用于在蜂窝电话网络和位于移动站内的GPS接收机之间传送辅助信息并识别移动台的位置的方法和装置。通过网络分配移动台与网络之间的专用信道，调整移动台与网络之间的上行定时。网络请求辅助信息，并请求GPS接收机在公共参考时间执行GPS码移动搜索。在接收到辅助信息时，网络将辅助信息发送到GPS接收机，然后执行GPS码移动搜索。 GPS接收机包含一组相关器和累加器，以对移动的GPS接收机产生的各种多普勒频移进行多次并行搜索。移动台随后将位置信息发送到蜂窝电话网络。

4. 发明授权

US5968198A Decoder utilizing soft information output to minimize error rates 失效
标题翻译：解码器利用软信息输出来最小化错误率
公开(公告)号：US5968198A
公开(公告)日：1999-10-19
申请号：US699101
申请日：1996-08-16
申请人： Amer A. Hassan , Ali S. Khayrallah , Yi-Pin Eric Wang , Kumar Balachandran , Rajaram Ramesh
发明人： Amer A. Hassan , Ali S. Khayrallah , Yi-Pin Eric Wang , Kumar Balachandran , Rajaram Ramesh
IPC分类号： H04L1/00 , H03M13/09 , H03M13/13 , H03M13/15 , H03M13/29 , H03M13/37 , H03M13/45 , H04L1/16 , H04L1/18 , H04L25/06 , H03M13/00
CPC分类号： H04L25/067 , H03M13/13 , H03M13/27 , H03M13/2906 , H03M13/2933 , H03M13/3738 , H03M13/456 , H03M13/6306 , H04L1/0065 , H04L1/0071 , H03M13/09 , H03M13/6331 , H04L1/1809 , H04L1/1816
摘要： A coding system is disclosed wherein the receive side includes a decoder capable of producing, in addition to the hard information decoded output, either or both symbol and/or bit soft information values. For a certain information bit position, a value proportional to the joint probability that a received symbol and the set of all hypothesized transmitted codewords that led to the estimated or detected hard information output is calculated. The calculated probabilities with respect to plural codewords having a zero in that certain information bit position are compared to the calculated probabilities with respect to the plural codewords having a one in that certain information bit position. The result of the comparison provides an indication of whether the hard information output in that same information bit position is more likely a one or a zero. The output soft information values are further processed in comparison to a preset threshold, with instances exceeding the threshold triggering block rejections and/or retransmissions.
摘要翻译：公开了一种编码系统，其中接收端包括能够产生除硬信息解码输出之外的符号和/或位软信息值之一或两者的解码器。对于某个信息位位置，计算与接收到的符号和导致估计或检测到的硬信息输出的所有假设的发送码字的集合的联合概率成比例的值。将具有该特定信息位位置的零的多个码字的计算概率与该特定信息位位置中具有一个的多个码字的计算概率进行比较。比较结果提供了在该相同信息位位置中的硬信息输出是否更可能是一个或零的指示。与预设阈值相比，输出软信息值进一步处理，其中实例超过阈值触发块拒绝和/或重传。

5. 发明授权

US5950114A Apparatus and method for deriving a random reference number from paging and originating signals 失效
标题翻译：从寻呼和发起信号中导出随机参考号的装置和方法
公开(公告)号：US5950114A
公开(公告)日：1999-09-07
申请号：US623873
申请日：1996-03-29
申请人： Kumar Balachandran , Yi-Pin Eric Wang , Larry William Massingill
发明人： Kumar Balachandran , Yi-Pin Eric Wang , Larry William Massingill
IPC分类号： H04B7/185 , H04W12/06 , H04B7/00
CPC分类号： H04B7/18567 , H04W12/06
摘要： A method and associated apparatus for deriving a random reference value from a paging signal transmitted between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication system. When communication is to be initiated, a paging signal is transmitted by a network station to a user terminal. When the user terminal detects the paging signal, a random reference value is derived from a portion of the paging signal, and response signal, responsive to the random reference value is generated and transmitted to the network station. When the network station receives the response signal, it compares it to an expected response value to authenticate the user terminal.
摘要翻译：一种用于从诸如卫星蜂窝通信系统的无线电通信系统的网络站和用户终端之间发送的寻呼信号中导出随机参考值的方法和相关联的装置。当要发起通信时，由网络台向用户终端发送寻呼信号。当用户终端检测到寻呼信号时，从寻呼信号的一部分导出随机参考值，产生响应于随机参考值的响应信号并发送给网络站。当网络站接收到响应信号时，将其与预期响应值进行比较，以验证用户终端。

6. 发明授权

US09253783B2 Management of uplink resources in multi-carrier CDMA system 有权
标题翻译：多载波CDMA系统上行资源管理
公开(公告)号：US09253783B2
公开(公告)日：2016-02-02
申请号：US13403683
申请日：2012-02-23
申请人： Yi-Pin Eric Wang , Anders Wallén , Stephen Grant
发明人： Yi-Pin Eric Wang , Anders Wallén , Stephen Grant
IPC分类号： H04W72/04
CPC分类号： H04W72/0486 , H04W72/0453
摘要： The method an apparatus described herein manages uplink resources to increase spectral efficiency and system capacity. According to one embodiment of the present invention, a base station may be assigned two or more downlink carriers for downlink transmission and two or more corresponding uplink carriers. In a multi-carrier mode, the base station may transmit signals on two or more downlink carriers to the same mobile terminal, and receive signals from the mobile terminal on one of the paired uplink terminals. The uplink carriers can be operated at different interference levels and the uplink traffic can be divided between the available uplink carriers based on the type of traffic and/or data transmission parameters. The mobile terminals may also be allowed to switch between the uplink carriers to improve overall efficiency.
摘要翻译：本文描述的装置的方法管理上行链路资源以提高频谱效率和系统容量。根据本发明的一个实施例，可以为基站分配用于下行链路传输的两个或更多个下行链路载波和两个或更多个对应的上行链路载波。在多载波模式中，基站可以在两个或多个下行链路载波上发送信号到同一个移动终端，并且在一个上行链路终端中的一个上接收来自移动终端的信号。上行链路载波可以以不同的干扰级别操作，并且可以基于业务类型和/或数据传输参数在可用的上行链路载波之间划分上行链路业务。还可以允许移动终端在上行链路载波之间切换以提高整体效率。

7. 发明授权

US08761323B2 Impairment covariance and combining weight updates during iterative turbo interference cancellation reception 有权
标题翻译：减弱协方差，并在迭代涡轮干扰消除接收期间组合权重更新
公开(公告)号：US08761323B2
公开(公告)日：2014-06-24
申请号：US13333478
申请日：2011-12-21
申请人： Yi-Pin Eric Wang , Gregory Bottomley , Jung-Fu Cheng , Stephen Grant , Ning He , Niklas Johansson , Cagatay Konuskan
发明人： Yi-Pin Eric Wang , Gregory Bottomley , Jung-Fu Cheng , Stephen Grant , Ning He , Niklas Johansson , Cagatay Konuskan
IPC分类号： H04B1/10
CPC分类号： H04W72/1278 , H04B1/71075 , H04B1/712 , H04W72/082
摘要： In a receive node of a wireless network, an iterative multi-user multi-stage interference cancellation receiver is used. After each stage of interference cancellation, interference characteristics change. An adaptive strategy is used in which after each stage of interference cancellation, impairment covariance is parametrically updated and combining weights of the receiver are adapted to reflect the updated impairment covariance.
摘要翻译：在无线网络的接收节点中，使用迭代多用户多级干扰消除接收机。在干扰消除的每个阶段之后，干扰特性发生变化。使用自适应策略，其中在干扰消除的每个阶段之后，对损伤协方差进行参数更新，并且接收机的组合权重被适配以反映更新的损害协方差。

8. 发明授权

US08743987B2 Symbol detection for alleviating inter-symbol interference 失效
标题翻译：用于缓解符号间干扰的符号检测
公开(公告)号：US08743987B2
公开(公告)日：2014-06-03
申请号：US13050210
申请日：2011-03-17
申请人： Yi-Pin Eric Wang
发明人： Yi-Pin Eric Wang
IPC分类号： H04L27/06 , H04L27/01 , H04B1/10
CPC分类号： H04L25/08 , H04L25/03012 , H04L25/03159 , H04L25/03171 , H04L25/03184 , H04L25/03312 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： A receiver is configured to perform symbol detection based on a total frequency domain received signal that comprises contribution from a block of time domain symbols. The receiver comprises electronic circuitry operate to divide the block into plural sub-blocks, and for each sub-block, to jointly detect the symbols of the sub-block while treating symbols of the block which are outside of the sub-block as noise.
摘要翻译：接收机被配置为基于包括来自时域符号块的贡献的总频域接收信号执行符号检测。接收机包括电子电路，用于将块划分为多个子块，并且对于每个子块，共同检测子块的符号，同时将处于子块外部的块的符号作为噪声进行处理。

9. 发明授权

US08724741B2 Signal quality estimation from coupling matrix 有权
标题翻译：耦合矩阵的信号质量估计
公开(公告)号：US08724741B2
公开(公告)日：2014-05-13
申请号：US12572680
申请日：2009-10-02
申请人： Gregory E. Bottomley , Yi-Pin Eric Wang
发明人： Gregory E. Bottomley , Yi-Pin Eric Wang
IPC分类号： H04L27/00 , H04L27/06 , H03D1/06
CPC分类号： H04B17/309 , H04B17/26 , H04L2025/03426
摘要： The quality of a received signal in a non-linear receiver is estimated using a coupling matrix G or Q that describes the interaction of symbols in the received signal with other symbols and/or how the impairment (noise and interference) interacts in the received signal. The coupling matrix is also useful for joint detection. The signal quality estimate may include, e.g., the minimum eigenvalue, and other functions, such as the determinant and trace of the coupling matrix. When G or Q varies with each block, as in CDMA systems employing longcode scrambling, a representative matrix can be used, such as a matrix of RMS values or average magnitudes of real and imaginary components. The signal quality estimate can be expressed as a bit error rate (BER).
摘要翻译：使用描述接收信号中的符号与其他符号的相互作用和/或接收信号中的损害（噪声和干扰）如何相互作用的耦合矩阵G或Q来估计非线性接收机中的接收信号的质量。耦合矩阵对于联合检测也是有用的。信号质量估计可以包括例如最小特征值和其他函数，诸如耦合矩阵的行列式和轨迹。当G或Q随每个块变化时，如在使用长码扰码的CDMA系统中，可以使用代表性矩阵，例如RMS值矩阵或实部和虚部分量的平均幅度。信号质量估计可以表示为误码率（BER）。

10. 发明授权

US08718199B2 Frequency-domain multi-stage group detection for alleviating inter-symbol interference 有权
标题翻译：用于减轻符号间干扰的频域多级组检测
公开(公告)号：US08718199B2
公开(公告)日：2014-05-06
申请号：US13050433
申请日：2011-03-17
申请人： Yi-Pin Eric Wang , Gregory E. Bottomley
发明人： Yi-Pin Eric Wang , Gregory E. Bottomley
IPC分类号： H04L27/06
CPC分类号： H04L25/08 , H04L25/03012 , H04L25/03159 , H04L25/03171 , H04L25/03184 , H04L25/03312 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： A receiver comprises plural receive antennas and electronic circuitry. The plural receive antennas are configured to receive, on plural subcarriers transmitted over a radio interface, a frequency domain signal that comprises contribution from a block of time domain symbols. The electronic circuitry is configured or operable to perform symbol detection of time domain symbols comprising the block by performing a multi-stage joint detection procedure comprising plural stages, and thus serves as a detector (40). For a first stage the block is divided into a first number of sub-blocks each having a sub-block first size. For a second stage the block is divided into a second number of sub-blocks each having a sub-block second size, the sub-block second size being greater than the sub-block first size. For each stage a detector (40) formulates frequency domain combining weights and uses the frequency domain combining weights for combining multiple receive versions of each subcarrier to provide candidate symbol combination values for symbols in each sub-block of the respective stage. For the second stage the detector (40) is further configured to use the candidate symbol combination values of the first stage to formulate joint hypotheses to serve as candidates for the joint detection operation of the second stage.
摘要翻译：接收机包括多个接收天线和电子电路。多个接收天线被配置为在由无线电接口发送的多个子载波上接收包括来自时域符号块的贡献的频域信号。电子电路被配置或可操作以通过执行包括多个级的多级联合检测过程来执行包括该块的时域符号的符号检测，从而用作检测器（40）。对于第一阶段，块被分成具有子块第一大小的第一数量的子块。对于第二级，块被分成第二数量的子块，每个子块具有子块的第二尺寸，子块的第二尺寸大于子块的第一尺寸。对于每个阶段，检测器（40）制定频域组合权重并使用频域组合权重来组合每个子载波的多个接收版本，以为相应级的每个子块中的符号提供候选符号组合值。对于第二级，检测器（40）还被配置为使用第一级的候选符号组合值来形成联合假设以用作第二级的联合检测操作的候选。

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