Research Article
Diversity-Multiplexing Tradeoff Coordinated Block-Diagonalization Precoding
@INPROCEEDINGS{10.1109/ChinaCom.2011.6158132, author={Linan Sun and Xuejun Sha and Zhun Ye and Zhongzhao Zhang}, title={Diversity-Multiplexing Tradeoff Coordinated Block-Diagonalization Precoding}, proceedings={6th International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={3}, keywords={base station coordination joint transmission precoding interference cancellation macro diversity}, doi={10.1109/ChinaCom.2011.6158132} }- Linan Sun
Xuejun Sha
Zhun Ye
Zhongzhao Zhang
Year: 2012
Diversity-Multiplexing Tradeoff Coordinated Block-Diagonalization Precoding
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2011.6158132
Abstract
A kind of diversity-multiplexing tradeoff coordinated block-diagonalization precoding structure is obtained, based on the study of several multi-cell MIMO downlink joint transmission algorithms. Simulation results show that performance of coordinated JT-BD outperforms JT-ZF and JT-MMSE, close to single cell interference-free upper bound. It can effectively eliminate inter-cell interference, and greatly improve spectral efficiency. Furthermore, spectral efficiency of 4 by 2 antenna structure is between 2 by 2 and 4 by 4 structure. However, because of the full use of macro diversity, CDF curve of 4 by 2 structure is much steeper, especially at lower SNR, so it can improve users’ fairness. In addition, relative to 4 by 4 structure, its receiver complexity and overhead can be greatly reduced. Therefore, the unsymmetrical structure including 4 by 2, which can obtain tradeoff between diversity and multiplexing, is an excellent and more reasonable coordinated structure.
