Fractional Frequency Reuse with Ordering to Increase Capacity of OFDM Systems

Seung-Moo CHO  Tae-Jin LEE  

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B   No.2   pp.654-657
Publication Date: 2009/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.654
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
frequency reuse,  fractional frequency reuse (FFR),  orthogonal frequency division multiplexing (OFDM),  resource management,  

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Summary: 
We present a novel frequency partitioning technique of fractional frequency reuse (FFR) that reduces the effect of co-channel interference and increases the capacity of OFDM systems. The usable sub-channel sets are classified into the common sub-channel sets for all cells and the dedicated sub-channel sets for specific cell types in FFR. The proposed fractional frequency reuse with ordering scheme (FFRO) can decrease the amount of interference in the common sub-channel sets by specially designing the sub-channel sets and the order of sub-channel assignment for specific cell types. Simulation results show that the proposed FFRO yields enhanced performance for both uniform and non-uniform distributions of traffic load.