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    • 3. 发明授权
    • Transmit methods with delay diversity and space-frequency diversity
    • 具有延迟分集和空间 - 频率分集的发射方法
    • US08160177B2
    • 2012-04-17
    • US12155319
    • 2008-06-02
    • Jianzhong ZhangCornelius Van RensburgFarooq KhanYinong Ding
    • Jianzhong ZhangCornelius Van RensburgFarooq KhanYinong Ding
    • H04B7/06
    • H04L1/0606H04B7/0456H04B7/0486H04B7/0671H04L1/0668H04L1/08H04L1/1819H04L5/0023H04L25/03898H04L27/2626
    • In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD scheme, as well as its extension to SFBC+FSTD based HARQ, are proposed. In one method, a plurality of information bits are encoded, scrambled and modulated to generate a plurality of modulation symbols. The plurality of modulation symbols are mapped onto the subcarriers in at least one transmission layer of a transmission resource. The modulation symbols are then precoded by using a matrix for cyclic delay diversity and a set of codewords from a certain codebook to generate a plurality of precoded symbols. The codewords are cycled for every a certain number of subcarriers. Finally, the precoded symbols are transmitted via a plurality of transmission antennas.
    • 在本发明中,提出了包含小延迟CDD码字循环,小型和大型延迟CDD的不同重新传输之间的码字循环的几种开环解决方案。 此外,提出了用于SFBC + FSTD方案的开环码字循环方法,以及其对基于SFBC + FSTD的HARQ的扩展。 在一种方法中,多个信息比特被编码,加扰和调制以产生多个调制符号。 多个调制符号被映射到传输资源的至少一个传输层中的子载波上。 然后通过使用用于循环延迟分集的矩阵和来自某个码本的一组码字来生成多个预编码符号来对调制符号进行预编码。 每个一定数量的副载波循环码字。 最后,预编码符号经由多个发送天线发送。