In this paper, we present a novel integer programming (IP) optimization formulation for downlink OFDM subchannel allocations in a multicell system and propose viable sub-optimal solutions. The schemes use dynamic intercell coordination in order to avoid or minimize dominant co-channel interference and achieve maximum network throughput by exploiting multicell multiuser diversity and interference avoidance gains. The performance of the proposed schemes is compared with that of reference round-robin schedulers without intercell coordination. It is observed from snapshot simulation results that the proposed schemes outperform the reference schemes in terms of throughput and quality of service (QoS) considerations.

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Keywords Interference avoidance, Multicell diversity, OFDM resource allocation, Radio resource optimization
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Conference 50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007
Rahman, M. (Mahmudur), & Yanikomeroglu, H. (2007). Multicell downlink OFDM subchannel allocations using dynamic intercell coordination. In GLOBECOM - IEEE Global Telecommunications Conference (pp. 5220–5225). doi:10.1109/GLOCOM.2007.990