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1. 发明申请

WO2011106571A2 METHODS AND APPARATUS FOR ITERATIVE DECODING IN MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于多输入多输出（MIMO）通信系统中迭代解码的方法和装置
公开(公告)号：WO2011106571A2
公开(公告)日：2011-09-01
申请号：PCT/US2011026138
申请日：2011-02-24
申请人： QUALCOMM INC , CUI TAO , TANG JIA , SENDONARIS ANDREW , SALVEKAR ATUL A , RAO SUBRAMANYA P N , SUBRAHMANYA PARVATHANATHAN , XIAO LEI , MCCLOUD MICHAEL L , BANISTER BRIAN C
发明人： CUI TAO , TANG JIA , SENDONARIS ANDREW , SALVEKAR ATUL A , RAO SUBRAMANYA P N , SUBRAHMANYA PARVATHANATHAN , XIAO LEI , MCCLOUD MICHAEL L , BANISTER BRIAN C
IPC分类号： H04L1/06
CPC分类号： H04L1/005 , H04L1/06 , H04L25/03242 , H04L25/067
摘要： Methods and apparatus for receiving, processing, and decoding MIMO transmissions in communications systems are described. A non-Gaussian approximation method for simplifying processing complexity where summations are used is described. Use of a priori information to facilitate determination of log likelihood ratios (LLRs) in receivers using iterative decoders is further described. A Gaussian or non-Gaussian approximation method using a priori information may be used to determine a K-best list of values for summation to generate an LLR is also described.
摘要翻译：描述了用于在通信系统中接收，处理和解码MIMO传输的方法和装置。描述了用于简化使用求和的处理复杂度的非高斯近似方法。进一步描述使用先验信息以便于使用迭代解码器确定接收机中的对数似然比（LLR）。也可以使用使用先验信息的高斯或非高斯近似方法来确定用于求和以产生LLR的K个最佳值列表。

2. 发明申请

WO03019808A2 METHOD AND APPARATUS FOR W-CDMA HANDOFF SEARCHING 审中-公开
标题翻译： W-CDMA HANDOFF搜索的方法与装置
公开(公告)号：WO03019808A2
公开(公告)日：2003-03-06
申请号：PCT/US0226450
申请日：2002-08-20
申请人： QUALCOMM INC
发明人： SHIU DA-SHAN , SUBRAHMANYA PARVATHANATHAN , RAO SUBRAMANYA P N
IPC分类号： H04W24/00 , H04B1/7083 , H04L12/56 , H04B1/707
CPC分类号： H04B1/7083 , H04B2201/70701 , H04B2201/70702 , H04W36/00 , H04W48/16 , Y02D70/00 , Y02D70/40
摘要： Techniques for improved handoff searching in asynchronous systems, such as W-CDMA, are disclosed. In one aspect, a two-step search procedure is used when a list of neighbor codes is known. In the first step, a received signal is correlated with a slot timing code to locate on or more pilots and the slot boundaries associated therewith. In the second step, the received signal is correlated with each of the list of codes at the slot boundaries identified with pilots in the first step to identify the pilot code and the frame timing associated with each pilot. Various other aspects of the invention are also presented. These aspects have the benefit of decreasing search time, which translates to increased acquisition speed, higher quality signal transmission, increased data throughput, decreased power, and improved overall system capacity.
摘要翻译：公开了用于在诸如W-CDMA之类的异步系统中改进切换搜索的技术。在一个方面，当已知邻居码列表时，使用两步搜索过程。在第一步骤中，接收的信号与时隙定时码相关联，以定位或多于其上的导频和与其相关联的时隙边界。在第二步骤中，接收到的信号与在第一步骤中用导频识别的时隙边界上的每个代码列表相关联，以识别与每个导频相关联的导频码和帧定时。还提出了本发明的各种其它方面。这些方面具有减少搜索时间的优点，这意味着增加的采集速度，更高质量的信号传输，增加的数据吞吐量，降低的功率以及整体系统容量的提高。

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