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Capacity Enhancing Subcarrier Allocation in OFDM Systems with Fractional Frequency Reuse
Seung Su HAN Jongho PARK Tae-Jin LEE Hyun Gi AHN Kyunghun JANG
Publication
IEICE TRANSACTIONS on Communications
Vol.E92-B
No.7
pp.2538-2541 Publication Date: 2009/07/01 Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2538 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: co-channel interference, fractional frequency reuse, OFDMA, subcarrier allocation,
Full Text: PDF(202.2KB)>>
Summary:
Some wireless OFDMA communication systems support the frequency reuse factor of 1. In order to reduce co-channel interference (CCI) caused by neighbor cells, the fractional frequency reuse (FFR) can be employed. A promising frequency partitioning policy and subcarrier allocation for FFR are essential. In this letter, we employ an efficient frequency partitioning mechanism with less interference and propose an efficient subcarrier allocation algorithm to maximize the sum of users capacity under FFR. We show that the proposed algorithm has higher spectral efficiency than the conventional method as well as significantly high system fairness.
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