DocumentCode :
2138036
Title :
A study on a cooperative relay using joint network and channel coding in simple triangular network topology
Author :
Mizobuchi, Masatoshi ; Ibi, Shinsuke ; Sampei, Seiichi
Author_Institution :
Grad. Sch. of Eng., Osaka Univ., Suita, Japan
fYear :
2009
fDate :
13-16 Sept. 2009
Firstpage :
2330
Lastpage :
2334
Abstract :
This paper proposes a cooperative relay transmission exploiting a concatenated structure composed of a simple exclusive OR (XOR) network code and channel codes. A main contribution of this paper is to clarify the joint network-and-channel coding combined with an iterative decoding is effective in providing highly reliable wireless communications even in the case where distances from one destination node to two source nodes are not the same in the case of triangular topology network. In this case, it is subject to imbalanced signal powers at the destination node, resulting in imbalanced link quality. In this paper, we focus on an analogy between the triangular topology network and a quaternary PSK (QPSK) symbol with a rectangular shape, i.e., imbalanced the in-phase and quadrature-phase (I-Q). After demonstrating that the rectangular QPSK has a potential to detect signals with high accuracy by iterative decoding, a configuration of the cooperative relay to be proposed in this paper is revealed. Computer simulation confirms that both the rectangular QPSK and the cooperation are effective to solve the imbalanced problem.
Keywords :
channel coding; network coding; quadrature phase shift keying; channel codes; channel coding; cooperative relay; exclusive OR network code; iterative decoding; joint network; quaternary PSK symbol; reliable wireless communications; simple triangular network topology; Channel coding; Concatenated codes; Iterative decoding; Network topology; Quadrature phase shift keying; Relays; Shape; Signal detection; Telecommunication network reliability; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5122-7
Electronic_ISBN :
978-1-4244-5123-4
Type :
conf
DOI :
10.1109/PIMRC.2009.5450236
Filename :
5450236
Link To Document :
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