Title :
Parallel concatenated Gallager codes for CDMA applications
Author :
Behairy, Hatim ; Chang, Shih-Chun
Author_Institution :
George Mason Univ., Fairfax, VA, USA
Abstract :
We present a class of concatenated codes called parallel concatenated Gallager codes (PCGC) using low-density parity-check (LDPC) component codes. We report simulation results for PCGC that outperform those for comparable LDPC codes both in additive white Gaussian noise (AWGN) and flat Rayleigh fading channels. The good performance of PCGC increases the capacity of CDMA systems while the reduced encoding and decoding complexity of such codes keep the signal processing delays within a reasonable limit
Keywords :
AWGN channels; Rayleigh channels; block codes; code division multiple access; computational complexity; concatenated codes; delays; error correction codes; AWGN channels; CDMA; LDPC codes; additive white Gaussian noise; block codes; concatenated codes; error control codes; flat Rayleigh fading channels; low-density parity-check codes; parallel concatenated Gallager codes; signal processing delays; AWGN; Additive white noise; Concatenated codes; Decoding; Delay; Fading; Multiaccess communication; Parity check codes; Signal processing; Turbo codes;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965568
