Opportunistic scheduling and spectrum reuse in relay-based cellular networks

In order to understand the key merits of multiuser diversity, opportunistic scheduling and spectrum reuse techniques in downlink relay-based cellular networks, this paper analyzes the spectral efficiency performance over a fading multihop broadcast channel (MBC) composed of a base station (BS), a re...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on wireless communications 2010-03, Vol.9 (3), p.1074-1085
Main Author: Oyman, O.
Format: Article
Language:English
Subjects:
Applied sciences
Base stations
Broadcasting
Cellular
cellular networks
Channels
Computer simulation
Downlink
Efficiency
Equipments and installations
Exact sciences and technology
extreme value theory
Fading
Information, signal and communications theory
Land mobile radio cellular systems
Mobile radiocommunication systems
multihop relaying
Multiplexing
multiuser diversity
Networks
opportunistic scheduling
orthogonal frequency division multiple access (OFDMA)
Performance analysis
Radio resource management
Radiocommunications
Rayleigh channels
Relays
Reuse
Scheduling
Signal and communications theory
Spectra
Spectral analysis
spectrum reuse
Spread spectrum communication
Studies
Switching and signalling
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
wide area networks
Wireless networks
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to understand the key merits of multiuser diversity, opportunistic scheduling and spectrum reuse techniques in downlink relay-based cellular networks, this paper analyzes the spectral efficiency performance over a fading multihop broadcast channel (MBC) composed of a base station (BS), a relay station (RS), U far users and V near users in the asymptotic regime of large number of users. Using tools from extreme-value theory, we characterize the average spectral efficiency of the MBC as a function of the number of users and physical channel parameters. Our analysis yields very accurate formulas even for moderately low values of U and V , specified in detail and verified (via Monte Carlo simulations) for the case of Rayleigh fading. Next, we consider a relay-based broadband multi-cellular network in the downlink mode; with special focus on orthogonal frequency-division multiple-access (OFDMA) resource allocation and investigate the spectral efficiency performance of opportunistic multiuser scheduling and spectrum reuse techniques based on capacity analysis and system-level simulations. This empirical study validates our analytical insights and helps to further identify design tradeoffs associated with spectrum reuse, interference management and multiuser diversity techniques in relay-based cellular networks.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2010.03.081306