Title :
A Novel Decoding Scheme for LT-Codes in Wireless Broadcasting Systems
Author :
Kongtao Wang ; Zhiyong Chen ; Hui Liu
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
In this letter, a novel decoding strategy for Luby transform (LT) codes in wireless broadcasting systems is presented and analyzed. The proposed hybrid-soft-and-hard-decoding (HSHD) scheme leverages cooperation between the MAC and the PHY layer, and achieves significant gains in spectrum efficiency and broadcasting coverage with marginal increase in complexity. Simulation results are provided to illustrate the excellent performance of HSHD in both AWGN and Rayleigh fading channels. The decoding complexity of HSHD is also quantified.
Keywords :
AWGN channels; Rayleigh channels; broadcasting; decoding; transform coding; AWGN channels; HSHD scheme; LT-codes; Luby transform codes; MAC; PHY layer; Rayleigh fading channels; decoding complexity; hybrid-soft-and-hard-decoding scheme; novel decoding scheme; wireless broadcasting systems; Broadcasting; Complexity theory; Decoding; Encoding; Fading; High definition video; Wireless communication; LT-codes; hybrid-soft-and-hard-decoding; wireless broadcasting systems;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.031313.130064
