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Optimal Power Allocation Strategy for TBLAST Based 4G Systems

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DOI: 10.4236/eng.2009.12010    6,161 Downloads   9,785 Views  
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Wu YIN, Pei XIAO

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ABSTRACT

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.

KEYWORDS

Carrier Interference and Noise Ratio (CINR), Convolutional Turbo Coded Bell Space Time (TBLAST), Eigen Mode (EM), Optimal Power Allocation (OPL), Automatic Differentiation (AD), Symbolic Derivative (S

Cite this paper

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.

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