Title :
Suboptimum Demodulator for BICM-ID Receivers in Impulsive Noise
Author :
Nie Yuanfei ; Ge Jianhua ; Wang Yong
Author_Institution :
State Key Lab. of Integrated Service Networks, Xidian Univ., Xi´an
Abstract :
The optimum demodulator in BICM-ID receivers has high complexity in impulsive environments. Approximation methods are proposed for both the Bernoulli-Gaussian noise channel and the Middleton Class-A. A Jocabian approximation with threshold is presented to replace the sum of two exponentials. The Class-A model is simplified to the Bernoulli- Gaussian or the Gaussian. Simulation results show that the new methods have little performance degradation compared with the optimum, and are better than the foregone suboptimal ones for both channels.
Keywords :
Gaussian channels; Gaussian noise; approximation theory; demodulators; impulse noise; interleaved codes; iterative decoding; modulation coding; radio receivers; BICM-ID receivers; Bernoulli-Gaussian noise channel; Jocabian approximation; Middleton Class-A; bit-interleaved coded modulation; impulsive noise; iterative decoding; suboptimum demodulator; AWGN; Additive white noise; Approximation methods; Degradation; Demodulation; Gaussian noise; Intserv networks; Maximum likelihood decoding; Modulation coding; Working environment noise;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.334
