Inter-symbol interference if not taken care off may

cause severe error at the receiver and the detection of signal becomes

difficult. An adaptive equalizer employing Recursive Least Squares

algorithm can be a good compensation for the ISI problem. In this

paper performance of communication link in presence of Least Mean

Square and Recursive Least Squares equalizer algorithm is analyzed.

A Model of communication system having Quadrature amplitude

modulation and Rician fading channel is implemented using

MATLAB communication block set. Bit error rate and number of

errors is evaluated for RLS and LMS equalizer algorithm, due to

change in Signal to Noise Ratio (SNR) and fading component gain in

Rician fading Channel.