NDLI: Improved opportunistic feedback with multiuser diversity for wireless systems with finite queue

Content Provider	IET Digital Library
Author	Li, Hang Guo, Qinghua Huang, Defeng David
Abstract	A contention-based opportunistic feedback protocol has been proposed in the literature, to achieve multiuser diversity for the downlink transmission of a multiuser wireless system, with the assumption that the incoming data for the active users are infinitely backlogged. However, this assumption is not valid if the authors consider the finite-length queuing effect in practical systems. By taking not only the channel states, but also the queuing states into account, the authors propose an improved opportunistic feedback protocol with multiuser diversity, and analyse its performance with adaptive modulation and coding. Additionally, instead of solving a system of equations directly, a simple iterative method is proposed to obtain the stationary distribution of the system, where the system behaviour is modelled by a two-dimensional finite-state Markov chain. Numerical results demonstrate that the authors proposed protocol is superior to the protocol in the literature in terms of the average throughput, the average spectral efficiency and the average packet delay, when considering the queuing dynamics.
Starting Page	852
Ending Page	859
Page Count	8
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 6, Apr (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0215
Journal	IET Communications
Publisher Date	2014-02-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Codes Adaptive Coding Adaptive Modulation Average Packet Delay Average Spectral Efficiency Code Contention-based Opportunistic Feedback Protocol Downlink Transmission Finite Length Queuing Effect Finite Queue Improved Opportunistic Feedback Interpolation And Function Approximation Iterative Method Markov Processes Multiuser Channel Multiuser Diversity Multiuser Wireless System Numerical Analysis Packet Radio Network Protocol Queueing System Queueing Theory Radio Link And Equipment Stationary Distribution Two Dimensional Finite State Markov Chain
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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