Title
Diversity Gain Analysis of Distributed CDD Systems in Non-Identical Fading Channels
Abstract
This paper investigates the diversity gain of a distributed cyclic delay diversity (dCDD) scheme for cyclic-prefixed single carrier systems in non-identical fading channels. Non-identical small-scale fading is assumed in the environment, in which non-identical line-of-sight and non-line-of-sight fading coexist. A condition for dCDD resulting in intersymbol interference free reception at the receiver, is extended to this new channel environment. For an overpopulated system setup, a generalized performance analysis, is not available from existing works, is conducted after developing closed-form expressions for the distribution of the signal-to-noise ratio (SNR) realized at the receiver. Since the order statistics are involved in the statistical properties of the SNR, the corresponding spacing statistics are utilized to derive feasible closed-form expressions. The finalized closed-form expressions are shown to provide very reliable outage probability and spectral efficiency of dCDD for underpopulated and overpopulated systems. An asymptotic performance analysis verifies the maximum achievable diversity of the dCDD even in the overpopulated case within the considered channel environment. Link-level simulations are conducted and these verify the maximum achievable diversity gain.
Year
DOI
Venue
2020
10.1109/TCOMM.2020.3010995
IEEE Transactions on Communications
Keywords
DocType
Volume
Distributed single carrier system,cyclic delay diversity,diversity gain,non-identical frequency selective fading,coexisting line-of-sight and non-line-of-sight paths
Journal
68
Issue
ISSN
Citations 
11
0090-6778
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Kyeong Jin Kim156353.02
Hongwu Liu2659.58
Zhiguo Ding37031399.47
Philip V. Orlik439059.37
H. V. Poor5254111951.66