Performance Analysis for BICM Transmission over Gaussian Mixture Noise Fading Channels

—Bit-interleaved coded modulation (BICM) has been adopted in many systems and standards for spectrally efficient coded transmission. The analytical evaluation of BICM performance parameters, in particular bit-error rate (BER), has received considerable attention in the recent past. In this paper, we derive BER approximations for BICM transmission over general fading channels impaired by Gaussian mixture noise (GMN). To this end, we build upon the saddlepoint approximation of the pairwise error probability (PEP) and a recently established approximation for the probability density function (PDF) of bitwise reliability metrics for nonfading additive white Gaussian noise (AWGN) channels. We extend this PDF approximation to the case of GMN, and obtain closed-form expressions for its Laplace transform for fading GMN channels. The latter allows us to express the PEP and thus BER via the saddlepoint approximation. For the special case of fading AWGN channels the presented approximations are...

• Type: Journal
• Year: 2010
• Where: TCOM
• Authors: Alireza Kenarsari-Anhari, Lutz H.-J. Lampe
• Keywords: Approximations, GMN Channels, Saddlepoint Approximation, TCOM 2010