Paper Info
Title
Outage Performance of Two-Hop OFDM Systems with Spatially Random Decode-and-Forward Relays.
Abstract
In this paper, we analyze the outage performance of different multicarrier relay selection schemes for two-hop orthogonal frequency-division multiplexing (OFDM) systems in a Poisson field of relays. In particular, special emphasis is placed on decode-and-forward relay systems, equipped with bulk and per-subcarrier selection schemes, respectively. The exact expressions for outage probability are derived in integrals for general cases. In addition, asymptotic expressions for outage probability in the high signal-to-noise ratio region in the finite circle relay distribution region are determined in closed forms for both relay selection schemes. In addition, the outage probabilities for free space in the infinite relay distribution region are derived in closed forms. Meanwhile, a series of important properties related to cooperative systems in random networks are investigated, including diversity, outage probability ratio of two selection schemes, and optimization of the number of subcarriers in terms of system throughput. All analyses are numerically verified by simulations. Finally, a framework for analyzing the outage performance of the OFDM systems with spatially random relays is constructed, which can be easily modified to analyze other similar cases with different forwarding protocols, location distributions, and/or channel conditions.
Year
DOI
Venue
2017
10.1109/ACCESS.2017.2773658
IEEE ACCESS
Keywords
DocType
Volume
Spatially random relay,Poisson point process,multicarrier relay selection,OFDM,outage performance
Journal
5
ISSN
Citations 
PageRank 
2169-3536
0
0.34
References 
Authors
28
3
Name
Order
Citations
PageRank
Shuping Dang161.48
Justin P. Coon254969.98
Gaojie Chen341241.13