Performance of OFDM Systems Based on LDPC
Wei Chen · Wireless Communication Technology · 2006
Orthogonal Frequency Division Multiplexing(OFDM) is a multi-carrier modulation technique,which proved to be a main method for high-speed data transmission.It is widely used in WAN and HDTV.LDPC(low-density parity-check) is an effective error-correcting code.Its performance is very close to the Shannon limit and it has lower decoding complexity.This paper combined OFDM with LDPC.It simulates and analyses the performance of LDPC-COFDM system with different modulation.It also compares LDPC-COFDM with Turbo-COFDM in dissimilar Channel.It comes to conclusion that LDPC-COFDM method is effective in the high-speed data transmission.