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Interference Mitigation Techniques Using Receiver Processing and Resource Allocation

Circuits and Systems 2016年第10期7卷 2893-2903页

作者： jesvin veancy boaz Yogesh Palanichamy Department of Electronics and Communication Engineering Easwari Engineering College Chennai India Department of Information Science and Technology Anna University Chennai India

Heterogeneous network consists of the pico cells overlaid over the macro cell coverage area in a wireless cellular network. The pico cells are deployed to increase the capacity of the homogeneous network by reusing the spectrum further. However, more users will tend to be associated to the macro cell due to the fact that the transmit power of the pico cell is low. In order to increase the number of users associated to the pico cell, range extension techniques like biased association are used. This will cause severe interference to cell edge users of the pico cell from the macro cell causing degradation in throughput performance in the cell range extension area. In this paper, interference mitigation using receiver processing along with different scheduling techniques is proposed to improve the throughput, average delay, and the packet delivery ratio performance of the system. The performance comparison of the round robin, proportional fair and modified largest weighted delay first (MLWDF) algorithm for resource allocation using interference suppressing receiver is done, and analyzed. It is shown that the MLWDF algorithm achieves the highest throughput with minimum average delay of packets with the best delivery ratio.

关键词： Cellular Network Orthogonal Frequency Division Multiplexing Interference Scheduling Post Processing Signal to Noise Ratio

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