Combination of HOS based blind equalization algorithms for use in mobile communications

Abstract

Mobile communication links require adaptive equalization with a fast rate of convergence while keeping computational effort at reasonable levels. In this paper we propose to combine known algorithms for blind equalization in order to exploit their desirable properties to reach this goal. A switching criterion is proposed which is based on the change in the equalizer impulse response between iterations of the adaption algorithm and may be used to detect changes of the channel impulse response. Algorithms under consideration include Godard's algorithm, stop-and-go algorithm, and tricepstrum equalization algorithm (TEA).