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Downlink Resource Management in the Frequency Domain for Multicell OFCDM Wireless Networks

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2 Author(s)
Riku Jantti ; Commun. Lab., Helsinki Univ. of Technol. (TKK), Espoo ; Seong-Lyun Kim

Recently, various versions of combining code division multiple access (CDMA) with orthogonal frequency-division multiplexing (OFDM) have drawn much attention for IMT-advanced (4G) and new broadcasting systems. In particular, variable-spreading-factor orthogonal frequency and code multiplexing (OFCDM) and multicarrier CDMA adopt 2-D spreading, i.e., time-domain and frequency-domain spreading. Maeda , Yang and Hanzo, Zheng , and Zhou have mentioned a few strong points of 2-D spreading. However, what is missing in their analysis/simulations is the system-level aspect of 2-D spreading. In particular, we are interested in the following questions: ldquoWhat are the advantages of frequency-domain spreading in multicell environments?rdquo and ldquoWhat is the optimal frequency reuse factor in 2-D spreading systems?rdquo Answers to these questions are investigated in this correspondence.

Published in:

IEEE Transactions on Vehicular Technology  (Volume:57 ,  Issue: 5 )