Title :
Soft decision-directed blind equalization
Author :
Jinbiao, Xu ; Fulong, Ma ; Yumin, Wang
Author_Institution :
Sch. of Telecommun. Eng., Xidian Univ., Xi´´an, China
Abstract :
Blind equalization techniques based on maximizing the a-posterior probability density function (p.d.f) are investigated and a novel soft decision-directed (SDD) algorithm is proposed. The new algorithm can achieve the faster convergence speed and smaller residual intersymbol interference (ISI). The blind decision feedback equalizer using soft DD algorithm is also presented, which leads to superior performance than that of the linear equalizer. Simulation results confirm the effectiveness of the proposed techniques
Keywords :
convergence of numerical methods; decision feedback equalisers; fading; intersymbol interference; multipath channels; probability; pulse amplitude modulation; quadrature amplitude modulation; ISI; PAM; PDF; QAM; blind decision feedback equalizer; convergence speed; fading multipath channels; intersymbol interference; performance; probability density function; simulation results; soft decision directed algorithm; soft decision directed blind equalization; Blind equalizers; Clustering algorithms; Convergence; Decision feedback equalizers; Electric breakdown; Finite impulse response filter; Intersymbol interference; Laboratories; Nonlinear equations; Probability density function;
Conference_Titel :
Signal Processing, 1996., 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2912-0
DOI :
10.1109/ICSIGP.1996.566965
