NDLI: Outage performance of multiple-input–multiple-output decode-and-forward relay networks with the Nth-best relay selection scheme in the presence of co-channel interference

Content Provider	IET Digital Library
Author	Li, Guoxin Chen, Jin Huang, Yuzhen Ren, Guochun
Abstract	In this study, a dual-hop multiple-input–multiple-output relay network with the Nth-best relay selection scheme in the presence of co-channel interference is studied. Specifically, the Nth-best relay is selected based on the channel state information (CSI) of the first hop. The authors first consider the CSI is perfect feedback and derive exact as well as asymptotic closed-form expressions for the outage probability. Results reveal that the diversity order of N R × min{N S(K − N + 1), N D} is achieved when there is no feedback delay, where N S, N R and N D represent the number of antennas at the source, the relays and the destination, respectively, K is the number of the relays and N (1 ≤ N ≤ K) represents the rank of relay chosen. Then, they investigate the outage performance of the system with feedback delay, and exact and asymptotic outage probability expressions are also obtained. Results illustrate that outdated CSI degrades the diversity order of the system to min{N R, N D}, which is independent of the number of antennas at the source, the number of relays and the rank of the relay chosen. The findings of the study provide valuable insights into the practical system design.
Starting Page	2762
Ending Page	2773
Page Count	12
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 15, Oct (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.0050
Journal	IET Communications
Publisher Date	2014-09-19
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asymptotic Closed-form Expressions Channel State Information Cochannel Interference CSI Decode And Forward Communication Diversity Reception Dual Hop Multiple Input Multiple Output Decode-and-forward Relay Network Electromagnetic Compatibility Feedback Delay Interference Maximal Ratio Combining MIMO Communication Multiantenna Diversity Nth-best Relay Selection Scheme Outage Performance Outage Probability Expressions Probability Radio Link And Equipment Relay Network Statistics Telecommunication Transmit Antenna Selection
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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