Paper Info
Title
Joint LDPC and Physical-layer Network Coding for Asynchronous Bi-directional Relaying
Abstract
For practical bi-directional relaying, symbols transmitted by two sources cannot arrive at the relay with perfect symbol and frame alignments and the asynchronous multiple-access channel (MAC) should be seriously considered. In this paper, we consider the Low-Density Parity-Check (LDPC)-coded BPSK signalling over the general asynchronous MAC with both frame and symbol misalignments. For the symbol-asynchronous MAC, we present a formal log-domain generalized sum-product-algorithm (Log-G-SPA) for efficient decoding. When the frame-asynchronism is encountered at the relay, we propose an original approach by employing the cyclic LDPC codes and the simple cyclic-redundancy-check (CRC) coding technique. Simulation results demonstrate the effectiveness of the proposed approach. © 1983-2012 IEEE.
Year
DOI
Venue
2013
10.1109/JSAC.2013.130809
IEEE Journal on Selected Areas in Communications
Keywords
DocType
Volume
Parity check codes,Relays,Decoding,Joints,Bidirectional control,Network coding,Binary phase shift keying
Journal
abs/1106.5648
Issue
ISSN
Citations 
8
0733-8716
19
PageRank 
References 
Authors
0.96
14
3
Name
Order
Citations
PageRank
Xiaofu Wu122329.74
Chunming Zhao267164.30
xiaohu you32529272.49