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[Zak14] Adaptive equalization and Successive self‐Interference Cancellation (SIC) methods

Rapport Scientifique : Date de dépot: 2014/05/12, Nb pages 87, (Tech. Rep.: CEDRIC-14-4308)

Auteurs: R. Zakaria

Mots clés: SIC, FBMC

Résumé: Interference reduction for FBMC/OQAM waveforms is addressed in the context of Widely Linear Filtering (WLF) MMSE estimation‐based per‐subchannel equalization, by taking the input correlation matrix pertaining to the kindred co‐channel interference into account. Furthermore, several adaptive multi‐tap configurations are developed and evaluated for both frequency‐selective and time‐variant subchannel transfer functions, in particular considering the sparseness of the overall channel impulse response and devoting special attention to the PMR environment in the interference free scenarios. In addition to the channel estimation methods reported in D3.1, this deliverable elaborates a specific form of channel estimation that relies on direct utilization of a pair of (real‐valued) pilots, as an alternative to using auxiliary pilots for controlling the intrinsic interference. Based on the real‐domain FBMC/OQAM orthogonality conditions, a real‐domain successive interference cancellation (SIC) framework is proposed and an attempt is bmade to take advantage of the redundant information contained in the received signal quadrature. Furthermore, due to the fact that the received noise samples at T/2 separation are correlated in the complex domain, the block‐wise processing nature of the SIC approach is used to perform a suitable noise prediction and cancellation. This deliverable also contains progress in carrier synchronization incorporated within the FC‐FB framework, thus supplementing the symbol synchronization and “per sub‐bin” one‐tap equalization considered and reported within the deliverable D3.1

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BibTeX

@techreport {
Zak14,
title="{Adaptive equalization and Successive self‐Interference Cancellation (SIC) methods}",
author="R. Zakaria",
number="{CEDRIC-14-4308}",
institution="{CEDRIC laboratory, CNAM-Paris, France}",
date={12-05-2014},
pages="87",
}