Title :
Application of 2-state trellis LDPC code in OFDM system
Author :
Chen, Ruiping ; Guo, Dong ; Zhongxun Wang ; Xingchen Wang ; Yu, Xinqiao
Author_Institution :
Inst. of Sci. & Technol. for Opto-Electron. Inf., Yantai Univ., Yantai, China
Abstract :
In this paper orthogonal frequency division multiplexing (OFDM) technology with the encoding and decoding methods of LDPC code are introduced, a novel two-state trellis decoding algorithm is presented. The performance of the OFDM system based on LDPC code is studied and compared with that of different decoding algorithm. Simulation results show that the LDPC codes in the OFDM base-band transmission system using two-state trellis decoding has much stronger error correcting capability than others. The information transmission rate will be greatly improved. Since LDPC code has advantages such as easy implementation of parallel encoding and decoding and simplicity in decoding algorithm, it will be widely used in mobile communication system in future.
Keywords :
OFDM modulation; error correction codes; parity check codes; trellis codes; OFDM base-band transmission system; OFDM system; decoding methods; encoding methods; mobile communication system; orthogonal frequency division multiplexing technology; parallel decoding; parallel encoding; trellis LDPC code; two-state trellis decoding algorithm; Low-density parity-check (LDPC) codes; orthogonal frequency division multiplexing (OFDM); trellis deevising;
Conference_Titel :
Intelligent Control and Automation (WCICA), 2010 8th World Congress on
Conference_Location :
Jinan
Print_ISBN :
978-1-4244-6712-9
DOI :
10.1109/WCICA.2010.5554812
