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Performance Enhancement of an OFDMA/CDM-Based Cellular System in a Multi-Cell Environment
Duk-Kyung KIM Je-Hoon RYU
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.1
pp.223-226 Publication Date: 2006/01/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.1.223 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: OFDMA/CDM, multi-cell,
Full Text: PDF(170.2KB)>>
Summary:
In this letter, we propose an OFDMA/CDM-based cellular system, which accommodates users in different frequency bands and multiplexes user data symbols with frequency domain spreading. The proposed system utilizes random codes to discriminate between cells and adopts the pre-equalization to enhance the performance. An efficient power allocation scheme is suggested for cellular applications with a transmit power constraint. In particular, the validity of the OFDMA/CDM-based cellular system is examined, by investigating its performance as a function of the number of multiplexed data symbols at different locations.
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