发明授权
US06680727B2 Method and apparatus for canceling pilot interference in a CDMA communication system
有权
用于在CDMA通信系统中消除导频干扰的方法和装置
- 专利标题: Method and apparatus for canceling pilot interference in a CDMA communication system
- 专利标题(中): 用于在CDMA通信系统中消除导频干扰的方法和装置
-
申请号: US09966256申请日: 2001-09-27
-
公开(公告)号: US06680727B2公开(公告)日: 2004-01-20
- 发明人: Brian K. Butler , Haitao Zhang , Paul E. Bender , Yu-Cheun Jou
- 申请人: Brian K. Butler , Haitao Zhang , Paul E. Bender , Yu-Cheun Jou
- 主分类号: H04B1500
- IPC分类号: H04B1500
摘要:
Techniques for canceling pilot interference in a wireless (e.g., CDMA) communication system. A received signal typically includes a number of signal instances (i.e., multipaths). For each multipath desired to be processed, the other multipaths act as interference on the desired multipath. If the pilot is generated based on a known data pattern (e.g., all zeros) and covered with a known channelization code (e.g., a Walsh code of zero), then the pilot in an interfering multipath may be estimated as the spreading sequence at a time offset corresponding to the arrival time of that multipath. The pilot interference from each interference multipath may be estimated based on the spreading sequence for the interfering multipath and the despreading sequence for the desired multipath. The total pilot interference from a number of interfering multipaths may be subtracted from the data component in the desired multipath to provide pilot-canceled data having improved performance.
公开/授权文献
信息查询