Paper Info
Title
Multi-User Aware Frame Structure for OFDMA Based System
Abstract
In this paper, we propose a multi-user aware frame structure for doubly dispersive channels in order to increase both spectral efficiency and frequency spread immunity of orthogonal frequency division multiple accessing (OFDMA) based systems. Unlike the conventional OFDMA based system where the fixed cyclic prefix duration and subcarrier spacing are utilized within the frame structure considering the worst case communication channel, in the proposed approach, multiple cyclic prefix durations and subcarrier spacings are employed. In order to build the proposed frame structure, the statistics of the mobility and the range of the users are mapped to inter-carrier-interference and maximum excess delay to obtain multiple subcarrier spacings and cyclic prefix durations. As a result, better frequency spread immunity and spectral efficiency are achieved by exploiting the doubly dispersive channel characteristics of the users.
Year
DOI
Venue
2012
10.1109/VTCFall.2012.6399155
Vehicular Technology Conference
Keywords
Field
DocType
OFDM modulation,intercarrier interference,subcarrier multiplexing,telecommunication channels,OFDMA based systems,conventional OFDMA based system,doubly dispersive channels,fixed cyclic prefix duration,frequency spread immunity,inter-carrier-interference,maximum excess delay,mobility statistics,multiple cyclic prefix durations,multiple subcarrier spacings,multiuser aware frame structure,orthogonal frequency division multiple accessing,spectral efficiency,worst case communication channel
Subcarrier,Frequency divider,Cyclic prefix,Computer science,Subcarrier multiplexing,Communication channel,Electronic engineering,Spectral efficiency,Orthogonal frequency-division multiplexing,Multi-user
Conference
ISSN
ISBN
Citations 
1090-3038 E-ISBN : 978-1-4673-1879-2
978-1-4673-1879-2
6
PageRank 
References 
Authors
0.53
10
2
Name
Order
Citations
PageRank
Alphan Sahin1252.13
Hüseyin Arslan233233.33