Downlink Performance of 2-cell Cooperation Schemes in a Multi-cell Environment

Abstract

Cooperative transmission schemes are used in wireless networks to improve the spectral efficiency. In a multi-cell environment, other cell interference (OCI) degrades the performance of wireless systems. In this paper, we study the performance of downlink sum rate for cell-edge users in a multi-cell environment under base station cooperation. The base-stations coordinate their transmission to the two cell-edge users in order to improve their Signal-to-interference-noise ratio (SINR) and throughput. Sum Capacity of cell-edge users for different transmit cooperation strategies is compared. Results show that Dirty Paper Coding (DPC) scheme, in a 2-cell cooperation, has significant gain in sum-rate compared to other cooperative schemes. However, when interference from all the other cells are considered, DPC performance is only marginally better than other low complexity cooperation schemes.

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Cite this paper

@inproceedings{Kumar2008DownlinkPO, title={Downlink Performance of 2-cell Cooperation Schemes in a Multi-cell Environment}, author={M. R. Ramesh Kumar and Sujith Bhashyam}, year={2008} }