Title: Adaptive bit and subcarrier allocation algorithm for multiuser OFDM/OQAM systems

Authors: Khalid El Baamrani; Ayad Habib; Raja Elassali

Addresses: Department of Telecommunications, ENSA of Marrakech, University Cadi Ayyad, P.O. Box 575, Marrakech, Morocco. ' Department of Telecommunications, ENSA of Marrakech, University Cadi Ayyad, P.O. Box 575, Marrakech, Morocco. ' Department of Telecommunications, ENSA of Marrakech, University Cadi Ayyad, P.O. Box 575, Marrakech, Morocco

Abstract: OFDM/OQAM technique is one of the leading candidates for future wireless systems. This technique does not employ guard regions and as a direct consequence, the wasted resources (time/power) allocated to the guard interval in the OFDM/QAM system are directly used to convey useful data; this guarantees a higher spectral efficiency and a throughput increase. The objective of this paper is to maximise the sum of the users data rates subject to the overall transmit power constraint and BER requirement for multiuser OFDM/OQAM downlink transmission. As demonstrated in the simulation results, the proposed OFDM/OQAM algorithm offers better performance than previous OFDM/QAM algorithms in the literature.

Keywords: multiuser OFDM; offset QAM; quadrature amplitude modulation; OQAM; filter bank-based multicarriers; FBMC; bit allocation; subcarrier allocation; mobile networks; orthogonal frequency division multiplexing; simulation.

DOI: 10.1504/IJMNDI.2011.042560

International Journal of Mobile Network Design and Innovation, 2011 Vol.3 No.4, pp.198 - 203

Published online: 26 Mar 2015 *

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