Title :
A blind equalization algorithm for multimodulus square-QAM signals
Author :
Abrar, Shafayat ; Nandi, Asoke Kumar
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Liverpool, Liverpool, UK
Abstract :
We present a generic and an efficient multimodulus family of blind equalization algorithm for use in the higherorder quadrature amplitude modulation based digital communication systems. The proposed algorithm is memoryless Bussgang-type and is based on a stochastic gradient descent of a constrained convex cost function. We show it to be capable of blindly equalizing the channel and recovering the carrier phase simultaneously. We also provide the dynamic convergence analysis of the proposed adaptive algorithm.
Keywords :
blind equalisers; convergence; digital communication; gradient methods; memoryless systems; quadrature amplitude modulation; adaptive algorithm; blind equalization algorithm; blindl channel equalization; carrier phase recovery; constrained convex cost function; digital communication system; dynamic convergence analysis; higher-order quadrature amplitude modulation; memoryless Bussgang-type; multimodulus square-QAM signal; stochastic gradient descent; Algorithm design and analysis; Blind equalizers; Convergence; Heuristic algorithms; Quadrature amplitude modulation; Signal processing algorithms;
Conference_Titel :
Signal Processing Conference, 2010 18th European
Conference_Location :
Aalborg
