Title :
Finite-SNR diversity-multiplexing trade-off of inter-vehicular cooperative diversity protocols
Author :
Perera, Prasad ; Jayalath, A.D.S.
Author_Institution :
Queensland Univ. of Technol., Brisbane, QLD, Australia
Abstract :
The finite-signal-to-noise ratio (SNR) diversity-multiplexing trade-off (DMT) of cooperative diversity protocols are investigated in vehicular networks based on cascaded Rayleigh fading. Lower bounds of DMT at finite SNR for orthogonal and non-orthogonal protocols are derived. The results showcase the first look into the achievable DMT trade-off of cooperative diversity in volatile vehicular environments. It is shown that the diversity gains are significantly suboptimal at realistic SNRs.
Keywords :
cooperative communication; multiplexing; protocols; vehicular ad hoc networks; DMT; cascaded Rayleigh fading; finite-SNR diversity-multiplexing tradeoff; finite-signal-to-noise ratio; intervehicular cooperative diversity protocols; nonorthogonal protocols; orthogonal protocols; vehicular networks; volatile vehicular environments;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.1830
