公开(公告)号：WO0106664A3

公开(公告)日：2001-05-17

申请号：PCT/US0019604

申请日：2000-07-18

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK ,  WARRIER DILIP G

IPC: H04B1/00 ,  H04B1/10 ,  H04B1/707 ,  H04B1/7107 ,  H04B7/26

CPC classification number: H04B1/7107 ,  H04B1/71072 ,  H04B2001/71077 ,  H04B2201/70701

Abstract: Several methods and corresponding apparatus reduce multiple access interference in code division multiple access communications systems (100) through successive interference cancellation techniques. An estimate of reliability of cancellation of a strongest interfering signal is formed from analysis of a pilot signal associated with the strongest signal. The estimate is used to derive a weight that is multiplied by a replica of the strongest signal to provide a weighted replica. The weighted replica is subtracted from a delayed version of the received channel. As a result, interference cancellation is robustly implemented when the strongest signal replica is most likely to be accurate and is not robustly implemented when the strongest signal replica is not likely to be accurate. This avoids combining a replica of the strongest signal with the received channel when the replica is more likely to contribute additional interference rather than reduce it.

Abstract translation: 几种方法和相应的装置通过连续的干扰消除技术来减少码分多址通信系统（100）中的多址干扰。 通过对与最强信号相关联的导频信号的分析形成对最强干扰信号的抵消的可靠性的估计。 该估计用于导出乘以最强信号的副本以提供加权副本的权重。 从接收到的信道的延迟版本中减去加权副本。 因此，当最强信号复制品最有可能是准确的并且当最强的信号复制品不太可能是准确的时，不能很好地执行干扰消除。 这避免了当副本更有可能产生额外的干扰而不是减少时，将最强信号的副本与接收的信道组合。