Blind Adaptive Channel Equalization Using Modified CMA

Abstract:

The constant modulus algorithm (CMA) equalizer is perhaps the best known and the most popular scheme for blind adaptive channel equalization. In this paper, a modified constant modulus algorithm (modified CMA or MCMA) is proposed by modifying its error function. We have discussed the MCMA to blind channel equalization for baud-rat sampling in single-user case. Computer simulations are provided for 8PSK signals in noise environments under frequency selective channels. Results demonstrate that the MCMA displays much superior performance to the CMA for both convergence-time and intersymbol interference (ISI) or mean square error (MSE).

• Periodical: Advanced Materials Research (Volume 658)
• Pages: 537-540
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.658.537
• Online since: January 2013
• Authors: Sun Shouyu
• Keywords: Blind Adaptive Channel Equalization, Computer Simulation, Constant Modulus Algorithm

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