Relevance Vector Machines for Enhanced BER Probability in DMT-Based Systems

Ashraf A. Tahat, Nikolaos P. Galatsanos
2010 Journal of Electrical and Computer Engineering  
A new channel estimation method for discrete multitone (DMT) communication system based on sparse Bayesian learning relevance vector machine (RVM) method is presented. The Bayesian frame work is used to obtain sparse solutions for regression tasks with linear models. By exploiting a probabilistic Bayesian learning framework, sparse Bayesian learning provides accurate models for estimation and consequently equalization. We consider frequency domain equalization (FEQ) using the proposed channel
more » ... timate at both the transmitter (preequalization) and receiver (postequalization) and compare the resulting bit error rate (BER) performance curves for both approaches and various channel estimation techniques. Simulation results show that the proposed RVM-based method is superior to the traditional least squares technique.
doi:10.1155/2010/191808 fatcat:f5jqxs5rdzhthjfqzusibbcuzq