DocumentCode :
46661
Title :
Interference-Limited Two-Way DF Relaying: Symbol-Error-Rate Analysis and Comparison
Author :
Xiaochen Xia ; Dongmei Zhang ; Kui Xu ; Youyun Xu
Author_Institution :
Coll. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
Volume :
63
Issue :
7
fYear :
2014
fDate :
Sept. 2014
Firstpage :
3474
Lastpage :
3480
Abstract :
The average symbol-error-rate (SER) performances for the three-phase two-way relaying (TWR) protocols are analyzed and compared in Rayleigh fading channels, where the terminals and relay are interfered with by a finite number of cochannel interferers. The relay is assumed to operate in the decode-and-forward (DF) mode. Three TWR protocols where the terminals adopt different combining methods on the received signals from a relay link and a direct link are considered, and the tight approximate expressions of average SERs for these protocols are theoretically derived. Based on the analytic results, the SER performances of the three TWR protocols are compared in the interference-limited scenario. The results show that the TWR protocol where the terminals employ selection combining on the received signals from the relay and direct links can achieve good tradeoff between the average SER performance and computational complexity at the terminals. Moreover, we show that the three-phase TWR protocol outperforms the two-phase TWR protocol significantly in SER performance.
Keywords :
cochannel interference; computational complexity; decode and forward communication; error statistics; protocols; Rayleigh fading channels; SER performances; cochannel interferers; computational complexity; decode-and-forward mode; interference-limited scenario; interference-limited two-way DF relaying; symbol-error-rate analysis; three-phase TWR protocol; three-phase two-way relaying protocols; two-phase TWR protocol; Approximation methods; Error analysis; Interference; Phase shift keying; Protocols; Relays; Signal to noise ratio; Cochannel interference (CCI); decode-and-forward (DF); symbol error rate (SER); two-way relaying (TWR);
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2013.2297194
Filename :
6701228
Link To Document :
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