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A Receiver-Centric OFCDM Approach with Subcarrier Grouping

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3 Author(s)
Miridakis, N.I. ; Dept. of Inf., Univ. of Piraeus, Piraeus, Greece ; Vergados, D.D. ; Papadakis, E.

In this letter, following a cross-layer design concept, we propose a novel subcarrier grouping technique for Orthogonal Frequency and Code Division Multiplexing (OFCDM) multiuser systems. We adopt a two dimensional (2D) spreading, so as to achieve both frequency- and time-domain channel gain. Furthermore, we enable a receiver-centric approach, where the receiver rather than a potential sender controls the admission decision of the communication establishment. We study the robustness of the proposed scheme in terms of the Bit-Error-Rate (BER) and the outage probability. The derived results indicate that the proposed scheme outperforms the classical OFCDM approach.

Published in:

Communications Letters, IEEE  (Volume:16 ,  Issue: 6 )