A Novel User Selection Algorithm for Multiuser MIMO-OFDMA System with Zero-Forcing Beamforming

Abstract:

As an important pre-coding method in MIMO- OFDMA system, zero-forcing beamforming (ZFBF) can eliminate co-channel interference (CCI) between users, and generate a series of parallel spatial subchannel without interference. In this paper, we propose a novel ZFBF-based user scheduling algorithm for multi-user downlink MIMO-OFDMA systems. The algorithm can satisfy the rate requirement of each user, choose the right user set in each subcarrier and minimize the total transmit power. Simulation results show that the proposed algorithm does outperform the non-adaptive algorithm and SUS-algorithm.

• Periodical: Applied Mechanics and Materials (Volumes 198-199)
• Pages: 1442-1446
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.198-199.1442
• Online since: September 2012
• Authors: Xiao Wu Li
• Keywords: MIMO-OFDMA, Parallel Spatial Subchannel, Quality of Service (QoS), User Scheduling Algorithm, Zero-Forcing Beamforming

References

[1] M. Costa, Writing on dirty paper, IEEE Trans. Inf. Theory, vol. 29, p.439–441, May (1983).

[2] H. Weingarten, Y. Steinberg, and S. Shamai, The capacity region ofthe Gaussian MIMO broadcast channel, in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Chicago, IL, (2004).

DOI: 10.1109/isit.2004.1365211

[3] S. Venkatesan and H. Huang, System capacity evaluation of multiple antenna systems using beamforming and dirty paper coding, Bell Labs.

[4] Cheong Yui Wong and Cheng, R.S. and Lataief, K.B. and Murch, R.D., Multiuser OFDM with adaptive subcarrier, bit, and power allocation, in IEEE J. Select. Areas Commun., vol. 17, pp.1747-1758, Oct. (1999).

DOI: 10.1109/49.793310

[5] Yui Ming Tsang, Cheng, R. S. Optimal resource allocation in SDMA/multi-input-single-output/OFDM systems under QoS and power constraints[C]. in proceedings of WCNC 2004, pp.1595-1600.

DOI: 10.1109/wcnc.2004.1311790

[6] Kivanc, D. and Guoqing Li and Hui Liu; Computationally efficientbandwidth allocation and power control for OFDMA, in IEEE Trans. Wireless Commun., vol. 2, pp.1150-1158, Nov. (2003).

DOI: 10.1109/twc.2003.819016

[7] Young - il Shin, Tae - Sung Kang and Hyung – Myung Kin. An efficient resource allocation for multiuser MIMO- OFDM systems with zero-forcing beamformer[C]. In proceedings of PMRC 2007, pp.1-5.

DOI: 10.1109/pimrc.2007.4394219

[8] T. Yoo,A. Goldsmith, On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming, in IEEE J. Select. Areas Commun., vol. 24, pp.528-541, Mar. (2006).

DOI: 10.1109/jsac.2005.862421