Novel structure for asynchronous multi-user CDMA detector

Summary form only given, as follows. A code division multiple access (CDMA) detector that employs a combination of a decorrelator and an adaptive interference canceller was proposed previously, for a synchronous channel. For the asynchronous channel the one-shot approach was suggested. It requires a (2 K-1) dimensional decorrelator and a canceller, (K is the number of users) and must be repeated once for every user if adequate performance for all users is sought. The present paper proposes a decorrelator, data combiner, canceller, data combiner arrangement. Using maximum signal-to-noise ratio (SNR) combining at both data combining stages, we show that the resulting decorrelator canceller performs with an asynchronous channel and for the synchronous case.