DocumentCode :
692344
Title :
A statistical geometric approach for capacity analysis in two-hop relay communications
Author :
Xiaoshen Song ; Ruonan Zhang ; Jianping Pan ; Jiajia Liu
Author_Institution :
Northwestern Polytech. Univ., Xi´an, China
fYear :
2013
fDate :
9-13 Dec. 2013
Firstpage :
4823
Lastpage :
4829
Abstract :
In relay communications, the system performances depend heavily on the statistical distances between the source, relay(s) and destination, since the signal strength decays superlinearly with distance. The capacity analysis of relay systems is non-trivial as the relay node(s) is(are) usually randomly located in the network. In this paper, a stochastic geometric approach is presented to analytically study the capacity of two-hop relay communications in both cellular and ad hoc networks. We are interested in the amplify-and-forward (AF) replay scheme, which is easy to implement in reality. Given that the relay is uniformly located inside a hexagonal cell or a circle, we first derive the probability density functions of the stochastic end-to-end path loss, then develop closed-form expressions by adopting series expansion, and finally obtain the explicit distributions of the capacity of two-hop relay communications under AWGN channel. All the theoretic results are validated through Monte-Carlo simulations. Different from previous numerical methods or approximation, the framework presented in this work can easily generate all statistical moments and enable the analysis of outage probability.
Keywords :
AWGN channels; Monte Carlo methods; ad hoc networks; amplify and forward communication; approximation theory; cellular radio; probability; relay networks (telecommunication); AF replay scheme; AWGN channel; Monte-Carlo simulations; ad hoc networks; amplify-and-forward replay scheme; approximation; capacity analysis; cellular networks; hexagonal cell; outage probability; probability density functions; relay nodes; series expansion; signal strength; statistical distances; statistical geometric approach; statistical moments; stochastic end-to-end path loss; two-hop relay communications; Ad hoc networks; Approximation methods; Relays; Shape; Signal to noise ratio; Transceivers; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Communications Conference (GLOBECOM), 2013 IEEE
Conference_Location :
Atlanta, GA
Type :
conf
DOI :
10.1109/GLOCOMW.2013.6855714
Filename :
6855714
Link To Document :
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