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Novel analytical performance bounds for symbol-by-symbol decoding of digital-data impaired by ISI and AWGN

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3 Author(s)
Baccarelli, E. ; Rome Univ., Italy ; Cusani, R. ; Galli, S.

New analytical upper bounds are derived for the performance of symbol-by-symbol maximum-likelihood (ML) Abend-Fritchman-type detectors for multi-amplitude/phase-modulated digital sequences transmitted over time-dispersive (generally) time-variant linear channels introducing finite intersymbol interference (ISI) and additive white Gaussian noise (AWGN). The proposed bounds are obtained starting from a novel form of the standard Bhattacharyya bound and take explicitly into account the allowed decoding delay. Both deterministic and random multipath slow-fading Rayleigh transmission ISI channels are considered. Simulation results obtained for some test channels of practical interest show the tightness of the derived analytical bounds

Published in:

Information Theory, IEEE Transactions on  (Volume:43 ,  Issue: 2 )