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    • 3. 发明申请
    • SYSTEM AND METHOD FOR PRECODING IN A MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) SYSTEM
    • 用于在多输入多输出(MIMO)系统中预编译的系统和方法
    • WO2006018710A1
    • 2006-02-23
    • PCT/IB2005/002458
    • 2005-08-19
    • NOKIA CORPORATIONVAN WAES, NicoZHANG, HuaHEISKALA, JuhaSTOLPMAN, Victor
    • VAN WAES, NicoZHANG, HuaHEISKALA, JuhaSTOLPMAN, Victor
    • H04L1/06
    • H04L1/0637H04B7/0413H04B7/0456H04B7/0617H04B7/0619H04L1/0675
    • A network entity in a multi-transmit antenna system, such as a transmitting or receiving entity, includes a component such as a pre-coder or a receiver, and is configured for full-spatial-rate coding data. The network entity is capable of providing a full-spatial-rate codebook having been designed by selecting an underlying partial-spatial-rate codebook designed for a system configured for partial-spatial-rate coding data. The full-spatial-rate codebook can then be designed in a manner including defining the full-spatial-rate codewords based upon partial-spatial-rate codewords of the partial-spatial rate codebook and basis vectors of a null space of the respective partial-spatial-rate codewords in a multi­dimensional vector space. The network entity can also be capable of selecting codewords of the codebook in accordance with a sub-space tracking method whereby the codewords of the codebook can be selected in a manner that exploits correlations therebetween.
    • 诸如发送或接收实体的多发射天线系统中的网络实体包括诸如预编码器或接收机的组件,并且被配置用于全空间速率编码数据。 网络实体能够提供通过选择为配置用于部分空间速率编码数据的系统而设计的底层部分空间速率码本来设计的全空间速率码本。 然后可以以包括基于部分空间速率码本的部分空间率码字定义全空间速率码字的方式来设计全空间速率码本以及各部分空间速率码本的零空间的基向量, 多维向量空间中的空间速率码字。 网络实体还可以根据子空间跟踪方法来选择码本的码字,由此可以以利用它们之间的相关性的方式来选择码本的码字。