| 摘要 |
PROBLEM TO BE SOLVED: To provide a CDMA adaptive array antenna receiver with which an arithmetic amount of an adaptive update algorithm to calculate an antenna weight coefficient is remarkably reduced so as to lighten the processing load on a DSP. SOLUTION: Since no correlation exists between fingers in the CDMA communication system, the adaptive update algorithm used to calculate the antenna weight coefficient through the use of N-degree correlation matrix independently by each finger is equivalent to the adaptive update algorithm used to calculate an (N×L)-degree correlation matrix, and then each finger independently uses the adaptive update algorithm in a way of minimizing a square mean of common error signals by a sbutractor 8 after the synthesis by a rake synthesis circuit 6 so as to control the antenna weight coefficient. Thus, the arithmetic amount of the adaptive update algorithm used by all MMSE control circuits 5-1-5-L can considerably be reduced in proportion from (NL)2 to N2L so as to relieve the processing load of the DSP.
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