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    • 4. 发明公开
    • 확산 스펙트럼 무선 통신을 위한 부분-간격 등화기
    • 用于传播光谱无线通信的均匀空间均衡器
    • KR1020080042934A
    • 2008-05-15
    • KR1020087008336
    • 2006-09-15
    • 퀄컴 인코포레이티드
    • 서브라만야,파르바타나탄강,인엽페이,지아선다레산,라제시
    • H04B7/005
    • H04B1/71057H04B7/0669H04B7/0673H04B7/0845H04L25/03044H04L25/03292H04L2025/03509
    • This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and selecting filter coefficients for an equalizer based on the estimated channel impulse response and the estimated channel variance. Moreover, in accordance with this disclosure, the channel variance estimation involves estimation of two or more co-variances for different received samples. Importantly, the equalizer is "fractionally spaced" which means that the equalizer defines fractional filtering coefficients (filter taps), unlike conventional equalizers that presume that filter coefficients are defined at integer chip spacing. The techniques can allow the equalizer to account for antenna diversity, such as receive diversity, transmit diversity, or possibly both.
    • 本公开描述了用于扩频无线通信的均衡技术。 这些技术可以包括基于所估计的信道脉冲响应和所估计的信道方差估计信道脉冲响应,估计信道方差,以及为均衡器选择滤波器系数。 此外,根据本公开,信道方差估计涉及对于不同接收样本的两个或多个协方差的估计。 重要的是,均衡器是“分数间隔”的,这意味着均衡器定义分数滤波系数(滤波器抽头),不同于传统的均衡器,假设滤波器系数是以整数芯片间隔定义的。 这些技术可以允许均衡器考虑天线分集,例如接收分集,发射分集,或者可能两者。