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http://dx.doi.org/10.7840/kics.2015.40.1.43

Interference Aware Downlink Channel Allocation Algorithm to Improve Throughput on OFDMA Cellular Multihop Networks with Random Topology  

Lim, Sunggook (Yonsei University, Department of Electrical and Electronic Engineering)
Lee, Jaiyong (Yonsei University, Department of Electrical and Electronic Engineering)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.40, no.1, 2015 , pp. 43-51 More about this Journal
Abstract
Upcoming cellular networks such as LTE-advanced and IEEE 802.16m are enhanced by relay stations to support high data rate multimedia services and minimize the shadow zone with low cost. Enhancing the relay stations, however, divides the multihop cellular network into smaller microcells and the distance between microcells is closer, which intends large intra-cell and inter-cell interference. Especially the access link on downlink in the OFDMA cellular network is the throughput bottleneck due to the severe interference caused by base stations and relay stations transmitting large data to mobile stations simultaneously. In this paper, we present interference aware channel allocation algorithm to avoid severe interference on multihop cellular networks with random topology. Proposed algorithm increases SINR(signal to interference plus noise ratio) and decreases number of required control messages for channel allocation, so that increases overall throughput on the networks.
Keywords
Multihop cellular network; OFDMA; Channel allocation; Interference mitigation; Relay;
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Times Cited By KSCI : 4  (Citation Analysis)
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