Optimal Power Allocation Strategy for TBLAST Based 4G Systems

DOI: 10.4236/eng.2009.12010   PDF   HTML     6,266 Downloads   9,867 Views  


There is a big demand for increasing number of subscribers in the fourth generation mobile communication systems. However, the system performance is limited by multi-path propagations and lack of efficient power allocation algorithms in conventional wireless communication systems. Optimal resource allocation and interference cancellation issues are critical for the improvement of system performance such as throughput and transmission reliability. In this paper, a turbo coded bell lab space time system (TBLAST) with optimal power allocation techniques based on eigen mode, Newton and convex optimization method and carrier-interference-and-noise ratio (CINR) are proposed to improve link reliability and to increase throughput with reasonable computational complexity. The proposed scheme is evaluated by Monte-Carlo simulations and is shown to outperform the conventional power allocation scheme.

Share and Cite:

W. YIN and P. XIAO, "Optimal Power Allocation Strategy for TBLAST Based 4G Systems," Engineering, Vol. 1 No. 2, 2009, pp. 91-98. doi: 10.4236/eng.2009.12010.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] C. Y. Wong, R. S. Cheng, K. B. Letaief, and R. D. Murch, “Multiuser OFDM with adaptive subcarrier, bit, and power allocation,” IEEE Selected Areas in Communications, Vol. 17, pp. 1747-1758, October 1999.
[2] K. Kim, Y. Han, and S.-L. Kim, “Joint subcarrier and power allocation in uplink OFDMA systems,” IEEE Communications Letters, Vol. 9, No. 6, pp. 526-528, 2005.
[3] R. Raghunath and A. Chockalingam, “SIR analysis and interference cancellation in uplink OFDMA with large carrier frequency and timing offsets,” Wireless Communications & Networking Conference, 2007 IEEE, Kowloon, China.
[4] B. Hamid, L. Jonathan, P. Jules, and U. Raner, “A study on UL potential issues,” WiMAX Forum, Technical working group, 2008. http://www.WiMAXforum.org.
[5] H. Jin and Y. X. Na, “Physical carrier to interference-plus-noise ratio techniques for wideband wireless communications networks,” Cisco Technology, INC, USPC Class: 375346.
[6] G. J. Foschini, “Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas,” Bell Labs Technical Journal, Vol. 1, No. 2, Autumn 1996.
[7] R. M. Buehrer and B. D. Woerner, “Analysis of adaptive multistage interference cancellation for CDMA using an improved Gaussian approximation,” IEEE Transactions on Communications, Vol. 44, No. 10, pp. 1308-1321, October 1996.
[8] M. Sellathurai and S. Haykin, “Turbo-BLAST for wireless communications: Theory and experiments,” IEEE Transactions on Signal Processing, Vol. 50, No. 10, pp. 2538-2546, October 2002.
[9] “DL MIMO PCINR,” Beceem, Alvarion, Runcom. Arraycomm, Nextwave, Fujitsu, Clearwire and Altair, WiMAX Forum, 2008.
[10] H. Vesa and K. Heikki, “SINR estimation for power control in systems with transmission beamforming,” IEEE Communication Letters, Vol. 9, No. 10, October 2005.
[11] “MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding,” USPTO Application #: 20080080634, 2008.
[12] W. Yu, W. Rhee, S. Boyd, and J. M. Cioffi, “Iterative water-filling for Gaussian vector multiple-access channels,” IEEE Transactions on Information Theory, Vol. 50, pp. 145-152, January 2004.
[13] Y. Wei, “Multiuser water-filling in the presence of crosstalk,” Information Theory and Applications Workshop, 2007.
[14] H. R. Zhuang, L. Dai, S. D. Zhou, and Y. Yao, “Low complexity per-antenna rate and power control approach for closed-loop V-BLAST,” IEEE Transactions on Communications, Vol. 51, pp. 1783-1787, 2003.
[15] S. H. Nam, O. S. Shin, and K. B. Lee, “Transmit power allocation for a modified V-BLAST system,” IEEE Transactions on Communications, Vol. 52 , pp. 1074-107, 2004.
[16] H. Simon and M. Michael, “Modern wireless communications,” Publisher: Prentice Hall; United States Edition, March 4, 2004.
[17] E. A. Jorswieck and H. Boche, “Transmission strategies for the MIMO MAC with MMSE receiver: Average MSE optimization and achievable individual MSE region,” IEEE Transactions on Signal Processing, Vol. 51, pp. 2872-2881, November 2003.
[18] A. Paulraj, R. Nabar, and D. Gore, “Introduction to space-time wireless communications,” Cambridge University Press, 2003.
[19] R. A. Jabr, A. H. Coonick, and B. J. Cory, “A primal-dual interior point method for optimal power flow dispatching,” IEEE Transactions on Power Systems, Vol. 17, pp. 654-662, 2002.
[20] A. Griewank, “Evaluating derivatives: Principles and techniques of algorithmic differentiation,” SIAM, Phila- delphia, P. A., 2000.

comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.