Research Article
Adaptive CQI adjustment with LTE higher-order sectorization
@INPROCEEDINGS{10.1109/ChinaCom.2013.6694580, author={Xinyu Gu and Wenyu Li and Lin Zhang}, title={Adaptive CQI adjustment with LTE higher-order sectorization}, proceedings={8th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2013}, month={11}, keywords={higher-order sectorization link adaptation cqi crs inter-cell interference}, doi={10.1109/ChinaCom.2013.6694580} }- Xinyu Gu
Wenyu Li
Lin Zhang
Year: 2013
Adaptive CQI adjustment with LTE higher-order sectorization
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2013.6694580
Abstract
To cope with the rapidly increased demands for traffic volumes and end-user datarates, deploying higher-order sectorization is an effective way especially in highly loaded scenario. However, for LTE, the mismatch between the interference level of the cell-specific reference signal and data is more severe with higher-order sectorization. This results in inaccurate channel quality estimation and conservative link adaptation. This paper proposes an adaptive adjustment algorithm to compensate the under-estimated channel quality. Simulation results clearly prove that the proposed algorithm can effectively improve the link adaptation and consequently improve end-user datarates.
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