Reduced-complexity multi-stage blind clustering equaliser

Chen, S., McLaughlin, S., Grant, P. M. and Mulgrew, B. (1993) Reduced-complexity multi-stage blind clustering equaliser. In Proceedings of ICC '93 - IEEE International Conference on Communications. IEEE. pp. 1149-1153 . (doi:10.1109/ICC.1993.397457).

Record type: Conference or Workshop Item (Paper)

Abstract

A multi-stage blind clustering algorithm is proposed for equalization of M-quadrature amplitude modulated (QAM) channels. A hierarchical decomposition divides the overall task of equalizing a high-order QAM channel into much simpler sub-tasks. Each sub-task can be accomplished fast and reliably using a blind clustering algorithm derived originally for 4-QAM signals. The constant modulus algorithm (CMA) is used as a benchmark to assess this multi-stage blind equalizer. It is demonstrated that the new blind adaptive algorithm achieves much faster convergence. This multi-stage clustering equalizer only requires slightly more computations than the very simple CMA and, like the latter, its computational complexity does not increase as the levels of digital symbols increase.

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Published date: 1993

Additional Information: IEEE International Conference on Communications (Geneva, Switzerland), 1993. Event Dates: 1993 Organisation: IEEE Communications society

Venue - Dates: IEEE International Conference on Communications, Geneva, Switzerland, 1993-01-01

Organisations: Southampton Wireless Group

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