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    • 1. 发明申请
    • DISTANCE-LEVEL COMBINING FOR MIMO SYSTEMS WITH HARQ AND/OR REPETITION CODING
    • 用于具有HARQ和/或重复编码的MIMO系统的距离级组合
    • WO2008021286A1
    • 2008-02-21
    • PCT/US2007/017863
    • 2007-08-08
    • MARVELL WORLD TRADE LTD.LEE, JungwonJANG, Woong Jun
    • LEE, JungwonJANG, Woong Jun
    • H04L1/18H04B7/08
    • H04B1/10H04B7/0413H04L1/0052H04L1/0054H04L1/08H04L1/1816H04L1/1845H04L25/067
    • Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. For each received signal vector, the receiver evaluates a decoding metric using each possible value of the transmitted signal vector to produce a set of distances. The receiver then combines distances from across the received signal vectors to produce a combined distance associated with each possible value of the transmitted signal vector. Using the combined distances, the receiver may choose among the possible values of the transmit signal vector to determine the actual transmit signal vector. Maximum Likelihood (ML) metrics are proposed for Hybrid ARQ type 1. QR decomposition and ZF equalization are envisaged to simplify the computation of the metrics.
    • 提供了用于对多输入多输出(MIMO)系统中的信号向量进行解码的系统和方法,其中接收机已经从相同的传输向量接收了一个或多个信号向量。 对于每个接收到的信号矢量,接收机使用发射信号向量的每个可能值来评估解码度量,以产生一组距离。 接收器然后组合来自接收的信号向量的距离,以产生与发射信号矢量的每个可能值相关联的组合距离。 使用组合距离,接收机可以在发射信号向量的可能值中选择以确定实际的发射信号向量。 对于混合ARQ类型1,提出了最大似然(ML)度量。设想了QR分解和ZF均衡以简化度量的计算。
    • 3. 发明申请
    • DECODING METHOD FOR ALAMOUTI SCHEME WITH HARQ AND/OR REPETITION CODING
    • 使用HARQ和/或重复编码的ALAMOUTI方案的解码方法
    • WO2008033423A2
    • 2008-03-20
    • PCT/US2007019857
    • 2007-09-12
    • MARVELL SEMICONDUCTOR INCLEE JUNGWONJANG WOONG JUN
    • LEE JUNGWONJANG WOONG JUN
    • H04L1/18H04L1/06
    • H04L1/0668H04L1/0631H04L1/1819
    • Systems and methods are provided for decoding a signal vector in a transmission scheme that uses transmit diversity as well as HARQ, repetition coding, or any other protocol that allows a receiver to obtain multiple reception of common transmit information. Information obtained in more than one symbol period are treated as a single received vector, and each of the received signal vectors may be processed to reduce or remove phase rotations caused by the channel. The received signal vectors may be combined by addition and decoded using a maximum-likelihood decoder. In some embodiments, the transmitter and receiver are configured to communicate using the transmit diversity scheme and a spatial multiplexing scheme. The scheme may be chosen based on the quality of the channel through which communication takes place.
    • 提供的系统和方法用于在使用发射分集以及HARQ,重复编码或允许接收机获得多个公共发送信息的接收的任何其他协议的传输方案中对信号向量进行解码。 在多个符号周期中获得的信息被视为单个接收向量,并且可以处理每个接收信号向量以减少或消除由信道引起的相位旋转。 接收的信号矢量可以通过加法组合,并使用最大似然解码器解码。 在一些实施例中,发射机和接收机被配置为使用发射分集方案和空间复用方案进行通信。 该方案可以基于通信进行通道的质量来选择。
    • 9. 发明申请
    • SYMBOL-LEVEL COMBINING FOR MIMO SYSTEMS WITH HARQ AND/OR REPETITION CODING
    • 用于具有HARQ和/或重复编码的MIMO系统的符号级组合
    • WO2008013852A3
    • 2008-03-13
    • PCT/US2007016728
    • 2007-07-24
    • MARVELL WORLD TRADE LTDLEE JUNGWONJANG WOONG JUNSONG LEILEI
    • LEE JUNGWONJANG WOONG JUNSONG LEILEI
    • H04L1/18H04B7/08H04L25/06
    • H04L25/067H04B7/0413H04B7/0848H04L1/1816H04L1/1819H04L1/1845
    • Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. The symbols of the received signal vectors are combine, forming a combined received signal vector that may be treated as a single received signal vector. The combined signal vector is then decoded using a maximum- likelihood decoder. In some embodiments, the combined received signal vector may be processed prior to decoding. Systems and methods are also provided for computing soft information from a combined signal vector based on a decoding metric. Computationally intensive calculations can be extracted from the critical path and implemented in preprocessors and/or postprocessors. One embodiment considers the MIMO HARQ reception using Cholesky decomposition or factoruzation of the metric.
    • 提供了用于对多输入多输出(MIMO)系统中的信号矢量进行解码的系统和方法,其中接收机已经从相同的传输矢量接收了一个或多个信号矢量。 组合接收信号矢量的符号,形成可被视为单个接收信号矢量的组合接收信号矢量。 然后使用最大似然解码器对组合的信号矢量进行解码。 在一些实施例中,组合的接收信号矢量可以在解码之前被处理。 还提供了用于基于解码度量从组合信号向量计算软信息的系统和方法。 可以从关键路径提取计算密集型计算,并在预处理器和/或后处理器中实现。 一个实施例考虑使用Cholesky分解或因子关联度量的MIMO HARQ接收。