DocumentCode
2568739
Title
An investigation of dynamic sub-carrier allocation in OFDMA systems
Author
Peng, Y. ; Doufexi, A. ; Armour, S. ; McGeehan, J.
Author_Institution
Centre for Commun. Res., Bristol Univ., UK
Volume
3
fYear
2005
fDate
30 May-1 June 2005
Firstpage
1808
Abstract
Orthogonal frequency division multiple access (OFDMA) systems commonly operate with a pseudo-random allocation of active sub-carriers to users. However, dynamic (multi-user) sub-carrier allocation (DSA) in an OFDMA system with a SISO channel has been investigated previously in Y. Wong Cheong et al. (1999), W. Rhee et al. (2000-2001). In this paper, an alternative algorithm is proposed and evaluated. Simulation results identify gains of up to 10 dB and show that near identical gain is achieved for all users.
Keywords
channel allocation; frequency division multiple access; mobile radio; multiuser channels; OFDMA systems; SISO channel; dynamic subcarrier allocation; multiuser allocation; pseudorandom allocation; AWGN; Data mining; Digital video broadcasting; Diversity methods; Downlink; Fast Fourier transforms; Frequency conversion; Frequency domain analysis; MIMO; OFDM modulation; Adaptive modulation; MIMO; OFDMA;
fLanguage
English
Publisher
ieee
Conference_Titel
Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st
ISSN
1550-2252
Print_ISBN
0-7803-8887-9
Type
conf
DOI
10.1109/VETECS.2005.1543633
Filename
1543633
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