Characteristics and performance of a constant modulus adaptive array for wireless digital communications systems

In mobile cellular environments where many sources of interference exist, adaptive arrays have attracted the attention of a number of researchers. We consider a constant modulus adaptive array (CM array) which requires no reference signal for adaptation. Convergence property is provided for more than two PSK signals under certain constraints. We also present an explicit expression for the weight coefficients of the array by which we evaluate transient response and signal-to-interference-noise ratio (SINR) at the array output. The bit error rate at the array output is calculated for a desired signal corrupted by one cochannel interference and Gaussian noise