Generalization of channel inversion algorithms for multiuser MIMO downlink systems

Hakjea Sung, Sang Rim Lee, Inkyu Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Recently a number of transmission schemes have been introduced to achieve sum capacity for multiuser multi-input multi-output (MIMO) broadcast channels (BC). A block diagonalization (BD) is an attractive method which operates only a few dB away from the sum capacity. This scheme is a generalization of the zero-forcing channel inversion to the case where each receiver is equipped with multiple antennas. One of the limitation of the BD is that the sum rate does not grow linearly with the number of users due to the noise enhancement. In this paper, we propose a generalized minimum mean-squared error (MMSE) channel inversion algorithm for users with multiple antennas to overcome the drawbacks of the BD for multiuser MIMO systems. Simulation results confirm that the proposed scheme achieves performance improvement over the conventional BD scheme. Also, we present a precoding method for systems with channel estimation errors and show that the proposed algorithm is robust to the channel estimation errors.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
Pages3350-3354
Number of pages5
DOIs
Publication statusPublished - 2008 Sep 12
EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
Duration: 2008 May 192008 May 23

Other

OtherIEEE International Conference on Communications, ICC 2008
CountryChina
CityBeijing
Period08/5/1908/5/23

Fingerprint

Channel estimation
Antennas

ASJC Scopus subject areas

  • Media Technology

Cite this

Sung, H., Lee, S. R., & Lee, I. (2008). Generalization of channel inversion algorithms for multiuser MIMO downlink systems. In IEEE International Conference on Communications (pp. 3350-3354). [4533666] https://doi.org/10.1109/ICC.2008.630

Generalization of channel inversion algorithms for multiuser MIMO downlink systems. / Sung, Hakjea; Lee, Sang Rim; Lee, Inkyu.

IEEE International Conference on Communications. 2008. p. 3350-3354 4533666.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sung, H, Lee, SR & Lee, I 2008, Generalization of channel inversion algorithms for multiuser MIMO downlink systems. in IEEE International Conference on Communications., 4533666, pp. 3350-3354, IEEE International Conference on Communications, ICC 2008, Beijing, China, 08/5/19. https://doi.org/10.1109/ICC.2008.630
Sung H, Lee SR, Lee I. Generalization of channel inversion algorithms for multiuser MIMO downlink systems. In IEEE International Conference on Communications. 2008. p. 3350-3354. 4533666 https://doi.org/10.1109/ICC.2008.630
Sung, Hakjea ; Lee, Sang Rim ; Lee, Inkyu. / Generalization of channel inversion algorithms for multiuser MIMO downlink systems. IEEE International Conference on Communications. 2008. pp. 3350-3354
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