Low-density parity-check codes for FFH/BFSK systems with partial-band noise jamming

Authors:
Li-Der Jeng;Shun-Sheng Lee;Chung-Hsuan Wang;Fang-Biau Ueng
Affiliations:
Chung Yuan Christian University, Chung-Li, Taiwan, R.O.C.;Chung Yuan Christian University, Chung-Li, Taiwan, R.O.C.;National Chiao Tung University, Hsin-Chu, Taiwan, R.O.C.;National Chung Hsing University, Tai-Chung, Taiwan, R.O.C.
Venue:
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Year:
2006

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Abstract

The performance of low-density parity-check (LDPC) codes is investigated for fast frequency hopping / binary frequency shift keying (FFH/BFSK) in partial-band noise jamming channels. We employ different diversity combining schemes to compute the codeword bit decision reliability. In this paper, we consider the maximum-likelihood (ML) diversity combining scheme and two low-complexity suboptimal diversity combining schemes: square-law with adaptive gain control (AGC) combining and square-law with equal gain combining. Simulation results show that, by combining both of the diversity and coding gain, our proposed system can provide excellent performance against partial-band noise jamming.