发明申请
- 专利标题: System, apparatus, and method for adaptive weighted interference cancellation using parallel residue compensation
- 专利标题(中): 使用并行残差补偿的自适应加权干扰消除的系统,装置和方法
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申请号: US11067498申请日: 2005-02-25
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公开(公告)号: US20060193374A1公开(公告)日: 2006-08-31
- 发明人: Yuanbin Guo , Dennis McCain , Joseph Cavallaro
- 申请人: Yuanbin Guo , Dennis McCain , Joseph Cavallaro
- 主分类号: H04L27/06
- IPC分类号: H04L27/06 ; H03D1/04 ; H04B1/707
摘要:
A system, apparatus and method for a multi-stage Parallel Residue Compensation (PRC) receiver for enhanced suppression of the Multiple Access Interference (MAI) in Code Division Multiple Access (CDMA) systems. The accuracy of the interference estimation is improved with a set of weights computed from an adaptive Normalized Least Mean Square (NLMS) algorithm. In order to reduce complexity, the commonality of the multi-code processing is extracted and used to derive a structure of PRC to avoid direct interference cancellation. The derived PRC structure reduces the interference cancellation architecture from a complexity that is proportional to the square of the number of users to a complexity that is linear with respect to the number of users. The complexity is further reduced by replacing dedicated multiplier circuits with simple combinational logic.