Rake receiver and spread spectrum communication device with this rake receiver

摘要

According to the present invention, an operation circuit having a weighting factor is provided in a RAKE receiver. In this operation circuit, the signal power is obtained from the reception amplitude of the magnetic path detected by the transmission path characteristic detection circuit for each path, and the transmission path characteristics are obtained. The interference wave power is obtained from the received amplitudes of the other two paths detected by the detection circuit, and the weighting coefficients are respectively calculated based on the signal power and the interference wave power. The weighted multiplier is then assigned to each weighted multiplier, weighted to the received signal of each path, and then symbol-synthesized by the symbol synthesizer 8 to multiply the spectral spreading signal transmitted by one source. Provided is a spread spectrum communication apparatus which makes it possible to obtain a good desired band-to-interference wave ratio even in the case of receiving by the medium.