Performance of multiuser detection with adaptive channel estimation

An adaptive multipath decorrelating multiuser receiver is considered for ap plication in Rayleigh fading multipath channels with significant Doppler sp read. Coherent diversity combining is performed using adaptively obtained c hannel estimates in a manner that minimizes the impact of estimation errors on data detection, The bit-error rate of the receiver is evaluated analyti cally, showing dependence on the fading rate of the channel and tracking ca pabilities of adaptive least mean square and recursive least square algorit hms, in addition to the order of multipath diversity and the number of acti ve code-division multiple-access users.