LDPC codes performance based on OFDM wireless communication system

In this paper, we present LDPC-coded OFDM system for wireless communication. LDPC code has superior performance in error correcting and can be adopted in various communication systems. We evaluate BER performance for wireless communication system based on IEEE802.11a standard. We demonstrate that LDPC coded system has better performance with smaller number of iterations than conventional Viterbi decoding. Furthermore it shows better performance by using large number of data symbols per packet. We present LDPC coded scheme, which is suitable for packet OFDM system, and show simulation results in multipath fading environment.