Research of Bit Error Rate with OFDM system based on low density parity check codes
Jianhua Zhang · Journal of Heilongjiang Institute of Technology · 2007
Low-Density Parity Codes(LDPC) have attracted great researchers interests because of their high code gains relatively low decoding complexity and a good performance close to the Shannon limit.In this paper,encoding and decoding principles of LDPCs are studied.The OFDM system use of LDPC is better than convolution codes.the Bit Error Rate(BER) of OFDM system can be improved highly in the condition of low Signal to Noise Ratio(SNR) and with rather low system complexity.