Abstract
Orthogonal Frequency Division Multiplexing (OFDM) is suitable for high-bit-rate data transmission in multipath environments. Many error-correcting codes have been applied in COFDM to reduce the high bit error rate (BER). Recently, low-density lattice codes (LDLC) attracted much attention. LDLC was proposed by Sommer in 2007, and the performance is very close to Shannon limit with iterative decoding. We applied LDLC in COFDM system and the simulation results showed that the LDLC is effective to improve the BER of the system in multipath environments.
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