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Blind FIR equalisation for high-order QAM signalling

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3 Author(s)
Chen, S. ; Dept. of Electron. & Comput. Sci., Southampton Univ., UK ; Cook, T.B. ; Anderson, L.C.

We compare some blind finite-impulse-response (FIR) equalisation schemes for high-order quadrature amplitude modulation (QAM) signalling. The popular constant modulus algorithm (CMA) is used as a benchmark in an investigation of two blind FIR equalisers, namely, a bootstrap maximum a posteriori probability (MAP) equaliser and a recently introduced concurrent CMA and decision directed (DD) equaliser (CMA+DD). Both equalisers are known to outperform the CMA considerably at costs of a small increase in computational complexity. Our study indicates that the bootstrap MAP equaliser has a faster convergence rate than the concurrent CMA+DD equaliser.

Published in:

Signal Processing, 2002 6th International Conference on  (Volume:2 )

Date of Conference:

26-30 Aug. 2002