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This paper addresses the problem of turbo decoding in the presence of non-ideal knowledge of the channel parameters. A practical OFDM system employing an interpolation based channel estimator is considered and a scheme for deriving the corresponding channel reliability factor to be passed to the turbo decoder is presented. Simulations are carried out for a realistic multicarrier system operating in...
In this paper a new scheme for deriving the channel reliability factor to be passed to the turbo decoder is derived in the framework of a Long Term Evolution (LTE) air interface and for a realistic Wiener channel interpolator. Our results show that a performance gain can be achieved with a limited increase in complexity by accounting for the imperfect channel knowledge in the channel reliability factor...
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