Title :
Research on LDPC codes based on VCDS
Author :
Wan, Guochun ; Luo, Yanfen ; Dong, Decun ; Chen, L.
Author_Institution :
Dept. of Commun. Eng., Tongji Univ., Shanghai, China
Abstract :
For the realization of a safe train traffic environment, a wireless communication system which makes an information network between ground and vehicles has been needed. Low-density parity-check (LDPC) codes have been widely considered as error-correcting codes for next generation communication systems. In this paper, vehicle condition detect system (VCDS) channel coding methods were given. Then some reduced complexity decoding algorithms (BP-based, TSP, TDMP) are compared with the original BP algorithm. We find the optimum algorithms which are improvement in coding gain and suitable for VCDS credible information transmission. In the aspect of the hardware design, We analysis a highly efficient scalable decoder architecture for LDPC codes. This architecture adjusts the parallel processing factor based on the serial frame to increase decode speed.
Keywords :
BCH codes; channel coding; decoding; parity check codes; railway communication; BCH codes; channel coding; coding gain; complexity decoding; low-density parity-check codes; train traffic; vehicle condition detect system; wireless communication system; Communication system traffic; Decoding; Error correction codes; Land vehicles; Parity check codes; Road vehicles; Telecommunication traffic; Vehicle detection; Vehicle safety; Wireless communication; TDMP decoding algorithms; credible transmission of vehicle information; integration decoder architectures; low density parity-check codes; vehicle condition detect system;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138342
