| 摘要 |
PROBLEM TO BE SOLVED: To enhance the diversity effect, regardless of a scale of a delay spread. SOLUTION: Outputs of antennas 402, 403 are respectively inversely spread by correlation devices 405, 407 and detected and fed to delay lines 410, 411 with tap. Then outputs of the correlation devices 405, 407 are converted into digital values at A/D converters 103, 104 at each one-chip period of the inverse spread code, and delay signal levels a1 to a6 of taps t11 to t16 and delay signal level b1 to b6 of taps t21 to t26 are stored in memories 106, 107. Six levels and their corresponding taps are obtained from the 12 levels in the higher order and stored in a memory 109 and delay signals of the taps t21 , t14 , t15 ,... are given to multipliers M21 , M14 , M15 ,... where weights are multiplied with the signals and the result is subjected to maximum ratio synthesis in a synthesis circuit 409. |
