Blind equalizer using the variable step size constant modulus algorithm

Benjangkaprasert, C.; Chompoo, S.; Anantrasirichai, N.; Janchitrapongvej, K.

Blind equalizer using the variable step size constant modulus algorithm

Author(s)

Benjangkaprasert, C.

Chompoo, S.

Anantrasirichai, N.

Janchitrapongvej, K.

Date Issued

December 1, 2004

Type

Conference Paper

Abstract

In this paper, we present a new adaptive equalizer using the variable step-size technique. The propose adaptive equalizer is based on Finite Impulse Response (FIR) filter structure, emphasizes for the 16-Quadrature Amplitude Modulation (16-QAM) digital communication system. The objective is to improve the performance or bit error of the communication due to the disturbances of noise and intersymbol interference phenomenon on the channel. The proposed algorithm is based on the Constant Modulus Algorithm (CMA) and this new algorithm provides fast convergence speed, low mean square error, and good symbol error rate than that of the previous one. We consider the 16-QAM communication system transmit data through Additive White Gaussian Noise (AWGN) channel. Moreover, according to the simulation result, it is found that the performance of the variable step-size adaptive equalizer is confirmed.

Citation

10th International Symposium on Integrated Circuits Devices and Systems Isic 2004 Integrated Systems on Silicon Proceedings, 289-292, 2004