DEMODULATOR AND DEMODULATING METHOD

摘要

The number of spreading codes multiplexed in a received signal is detected, and switches 4 and 5 are switched to the RAKE demodulation section 2 side if the detected number of spreading codes is less than a predetermined threshold value, and to the JD demodulation section 3 side if greater than or equal to the predetermined threshold value. As a result, joint detection demodulation is used only when the number of multiplexed spreading codes is large-that is, when the number of users is large-and consequently power can be saved during demodulation. <IMAGE>