DIVERSITY RECEPTION SYSTEM FOR MULTI-CARRIER MODULATION AND DIVERSITY RECEIVER FOR MULTI-CARRIER MODULATION

摘要

PROBLEM TO BE SOLVED: To provide a multi-carrier receiver that can realize pre-detection diversity. SOLUTION: Signals Ri received by n-sets of antennas RX-i (1=i=n) are outputted respectively to complex cross-correlation arithmetic sections 20-i and complex multipliers 21-i. The complex cross-correlation arithmetic sections 20-i output complex weights wi' to complex multipliers 21-i. The complex multipliers 21-i output products wi'Ri to a complex adder 22, and the complex adder 22 outputs a sum S=w1'R1+w2'R2+...+wn'Rn. The sum S=w1'R1+ w2+...+wn'Rn is given to a detection section 2000 and is fed also back to the complex multipliers 21-i. The complex multipliers 21-i decides the weights wi' in proportion to a correlation signal ∫RiS*dt so as to allow the diversity circuit 200 in the figure to conduct diversity synthesis of signals received by n-sets of the antennas RX-i by feedback.