Verfahren und Vorrichtung zur Effektverminderung von Vielfachzugriffstörungen, in einem Funkempfänger eines Kodemultiplexvielfachzugriffkommunikationssystem

摘要

A CDMA system is disclosed which reduces the effects of multiple access interference, thus increasing channel capacity and achieving greater efficiency in the use of a given frequency bandwidth. The signal is received (701) and the codes for the various channels are applied in the usual way to detect the signals in each channel (702-703). The detected signals are then divided (711) into those with a high confidence level (gl-gm) and those with a low confidence level (ul-uk). The high-confidence signals are then recoded (721-722) and subtracted (727) from the received signal. The codes corresponding to the channels whose detected signals had a low confidence level are then applied (731-733) to the resulting signal to derive improved detected signals for those channels.