Bit-Interleaved Coded Modulation With Iterative Decoding in Impulsive Noise

Ha H. Nguyen, Trung Q. Bui
2007 IEEE Transactions on Power Delivery  
Power-line communications (PLC) suffers performance degradation due mainly to impulsive noise interference generated by electrical appliances. This paper considers the application of bit-interleaved coded modulation with iterative decoding (BICM-ID) in Class-A impulsive noise environment to improve the spectral efficiency and error performance of PLC. In particular, the optimal soft-output demodulator and its suboptimal version are presented for an additive Class-A noise channel so that
more » ... nel so that iterative demodulation and decoding can be performed at the receiver. The effect of signal mapping on the error performance of BICM-ID systems in impulsive noise is investigated, with both computer simulation and a tight error bound on the asymptotic performance. Extrinsic information transfer chart analysis is carried out to illustrate the convergence properties of different mappings. The superior performance of BICM-ID compared to the orthogonal frequency-division multiplex technique is also clearly demonstrated. Index Terms-Bit-interleaved coded modulation (BCIM), class-A impulsive noise, error bound, extrinsic information transfer (EXIT) chart, iterative decoding, orthogonal frequency-division multiplex (OFDM), power-line communications (PLC), signal mapping, soft-output demodulation.
doi:10.1109/tpwrd.2006.881602 fatcat:plxua752hzb33px2lxahvcdh7u