Title :
A new dual-mode approach to blind equalization of QAM signals
Author :
Shahmohammadi, M. ; Kahaei, M.H.
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
The dual-mode CMA-assisted decision adjusted modulus algorithm (CADAMA) has been proved to be a very effective way of equalizing non-minimum phase channels blindly [Axford RA, et al., 1996]. However, it still suffers from a slow convergence when applies to the higher order QAMS. In this paper, we propose a new dual mode method for blind equalization of QAM signals, which achieves a faster convergence compared to the CADAMA. The simulation results show the better convergence rate of the proposed algorithm.
Keywords :
blind equalisers; quadrature amplitude modulation; signal processing; telecommunication channels; QAM signals; blind equalization; constant modulus algorithm-assisted decision adjusted modulus algorithm; convergence; dual-mode approach; nonminimum phase channels; quadrature amplitude modulation; Adaptive equalizers; Bandwidth; Blind equalizers; Character generation; Constellation diagram; Convergence; Cost function; Decision feedback equalizers; Quadrature amplitude modulation; Transmitters;
Conference_Titel :
Computers and Communication, 2003. (ISCC 2003). Proceedings. Eighth IEEE International Symposium on
Print_ISBN :
0-7695-1961-X
DOI :
10.1109/ISCC.2003.1214134
