Low density parity check codes in a frequency hopped communication system with partial-band interference

In this paper the applicability of low density parity check (LDPC) codes to a frequency hopped communications system with partial-band jamming is investigated. We show an irregular LDPC code which exhibits good waterfall and error floor performance with a block length of 1560 bits using binary phase-shift keying. The performance of this code is investigated in a partial band jammed environment with various channel interleaver lengths. We show that with a channel interleaver consisting of 120 hops and available side information, a partial band jammer only causes a loss of 0.3 dB over the full band case at a bit error rate of 10^-5.