Title :
Soft Constraint Satisfaction Multimodulus Blind Equalization Algorithms
Author :
Abrar, Shafayat ; Zerguine, Azzedine ; Deriche, Mohamed
Author_Institution :
Electr. Eng. Dept., COMSATS Inst. of Inf. Technol., Islamabad, Pakistan
Abstract :
In this letter, a new multimodulus algorithm for blind equalization of complex communication channels is derived by solving a constrained optimization problem with relaxation. The intersymbol interference (ISI) optimization and phase-recovery capabilities of the proposed algorithm are analyzed. It is shown from computer simulations that superior performance for the derived algorithm over Lin´s algorithm is obtained.
Keywords :
adaptive equalisers; adaptive signal processing; blind equalisers; intersymbol interference; optimisation; quadrature amplitude modulation; ISI; QAM signal; adaptive equalizers; blind equalization; complex communication channels; constrained optimization problem; intersymbol interference; multimodulus algorithm; phase-recovery; reduced constellation algorithm; soft-constraint satisfaction; Algorithm design and analysis; Blind equalizers; Communication channels; Computer simulation; Constellation diagram; Constraint optimization; Differential equations; Interference constraints; Intersymbol interference; Signal processing algorithms; Adaptive equalizers; blind equalization; multimodulus algorithm; reduced constellation algorithm; soft-constraint satisfaction;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2005.853042
