Adaptive Coordinated Tx-Rx Beamforming for Multi-user MIMO Systems 


Vol. 35,  No. 4, pp. 386-394, Apr.  2010


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  Abstract

In this paper, we propose an adaptive coordinated Tx-Rx beamforming scheme for inter-user interference cancellation, when a BS communicates with multiple users that each has multiple receive antenna. The conventional coordinated Tx-Rx beamforming scheme uses a fixed multi-stream per user regardless of the instantaneous channel states, that is, both user with ill-conditioned and well-conditioned channels have the same number of data streams. However, in the proposed adaptive coordinated Tx-Rx beamforming scheme, we select the number of streams per user to solve the inefficient problem of the conventional coordinated Tx-Rx beamforming. As a result of applying the adaptive coordinated Tx-Rx beamforming scheme, the BER performance is improved. Simulation results show that the proposed algorithm outperforms the conventional coordinated Tx-Rx beamforming algorithm by 2.5㏈ at a target BER of 10?².

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  Cite this article

[IEEE Style]

H. An, M. Mohaisen, K. Chang, "Adaptive Coordinated Tx-Rx Beamforming for Multi-user MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 386-394, 2010. DOI: .

[ACM Style]

HongSun An, Manar Mohaisen, and KyungHi Chang. 2010. Adaptive Coordinated Tx-Rx Beamforming for Multi-user MIMO Systems. The Journal of Korean Institute of Communications and Information Sciences, 35, 4, (2010), 386-394. DOI: .

[KICS Style]

HongSun An, Manar Mohaisen, KyungHi Chang, "Adaptive Coordinated Tx-Rx Beamforming for Multi-user MIMO Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 4, pp. 386-394, 4. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880