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    • 55. 发明授权
    • MIMO 전송을 위한 스피어 검출 및 레이트 선택을 위한 방법 및 장치
    • MIMO在移动通信系统中的应用
    • KR101136184B1
    • 2012-04-17
    • KR1020087019667
    • 2007-01-10
    • 퀄컴 인코포레이티드
    • 왈톤,제이,로드니월리스,마크,에스.하워드,스티븐,제이.
    • H04B7/04H04L1/06H04L25/03H03M13/00
    • H04L1/06H04L1/0631H04L25/03242H04L25/03292
    • Techniques for performing sphere detection to recover data symbols sent in a MIMO transmission are described. In an aspect, sphere detection is performed for data symbols generated with at least two modulation schemes. In another aspect, sphere detection is performed for the data symbols in an order determined based on at least one attribute of the data symbols, which may be error probabilities, modulation schemes, and/or link margins for the data symbols. In yet another aspect, rates for multiple data streams detected with sphere detection are selected based on channel state information. Signal qualities of the data streams may be estimated based on the channel state information, e.g., (1) an upper triangular matrix used for sphere detection and/or (2) an assumption that interference from data streams already detected is canceled. The rates for the data streams may be selected based on the estimated signal qualities.
    • 描述了执行球体检测以恢复在MIMO传输中发送的数据符号的技术。 在一个方面,对用至少两种调制方案生成的数据符号执行球体检测。 在另一方面,以基于数据符号的至少一个属性确定的顺序对数据符号执行球体检测,所述数据符号的至少一个属性可以是数据符号的错误概率,调制方案和/或链路余量。 在又一方面,基于信道状态信息来选择用球检测检测的多个数据流的速率。 可以基于信道状态信息来估计数据流的信号质量,例如(1)用于球体检测的上三角矩阵和/或(2)来自已经检测到的数据流的干扰被取消的假设。 数据流的速率可以基于估计的信号质量来选择。