A CDMA receiving apparatus receives a direct sequence CDMA signal produced through QPSK spreading modulation, performs coherent detection of the direct sequence CDMA signal, and despreads the signals, obtained through the coherent detection, through a despreading portion. The despreading portion comprises...http://www.google.co.uk/patents/US6359875?utm_source=gb-gplus-sharePatent US6359875 - CDMA receiving apparatus
