Energy/power estimation for LDPC decoders in software radio systems

Low-density parity-check (LDPC) codes are advanced error-correcting codes with performance approaching the Shannon limit. Although many LDPC code decoding algorithms have been proposed, no detailed comparison in energy/power consumption had ever been reported. This paper presents the performance and energy/power consumption trade-off for different LDPC decoding algorithms and proposes an efficient method to estimate energy consumption. We also propose a joint power management scheme for transmitter and receiver to save receiver energy while maintaining same communication quality by properly delivering more transmit power.