Title :
Multi-rate QC-LDPC scheme for narrowband powerline communication system
Author :
Zhang, Qi ; Yang, Fang ; Song, Jian
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper, a new channel coding scheme for the narrowband powerline communication (PLC) system employing quasi-cyclic (QC) low-density parity-check (LDPC) codes of multiple code rate and multiple code length is proposed. Combined with proper constellation mappings, 4 transmission modes can be supported, which provides different error correction capabilities. A comparison with the coding scheme in the G3 specification is performed, confirming that the proposed scheme is superior to G3 in terms of both flexibility and reliability while the efficiency is higher than that of G3. A study on the implementation complexity on FPGA is also conducted to prove the feasibility of using the proposed scheme in future practical narrowband PLC system.
Keywords :
carrier transmission on power lines; cyclic codes; error correction codes; field programmable gate arrays; parity check codes; telecommunication network reliability; FPGA; G3 specification; constellation mappings; error correction capabilities; multiple code length; multiple code rate; multirate QC-LDPC scheme; narrowband powerline communication system; quasicyclic low-density parity-check codes; transmission modes; Channel coding; Complexity theory; Decoding; Parity check codes; Robustness; Signal to noise ratio; G3; Power Line Communication (PLC); QC-LDPC; channel coding;
Conference_Titel :
Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-9539-9
DOI :
10.1109/IWCMC.2011.5982561
