60 GHz毫米波无线网络中基于归一化分阶效用函数功率控制算法
doi: 10.3724/SP.J.1146.2012.01085
Power Control Based on Unitary Step Utility Function in Millimeter Wave WPANs
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摘要: 由于基于SINR(Singal-to-Interference plus Noise Ratio)硬判决的分布式功率控制算法往往导致不收敛，所以该文将非合作博弈论应用在60 GHz毫米波系统的功率方案中。结合60 GHz毫米波系统多SINR门限值的特点，该文设计了一种新的基于归一化效用函数的功率控制算法。文中证明了纳什均衡点的存在性和唯一性。通过数值仿真分析验证了该算法简单易行，并能以低发射功率获得较高传输速率。同时，该文分析了不同平滑因子和代价因子对仿真结果的影响。
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关键词:
- 60 GHz 毫米波通信 /
- 非合作博弈论 /
- 功率控制 /
- 归一化分阶效用函数
Abstract: Distributed power control algorithms for systems with hard SINR (Signal-to-Interference plus Noise Satio) constraints may diverge when infeasibility arises. Non-cooperative game-theoretic approach is applied to model the power control of the transmitters in 60 GHz millimeter wave communication systems. Combining with the feature of 60 GHz wireless network, a new Unitary Step Utility-based Transmit Power Control (USUTPC) is proposed to improve the performance. A detailed analysis for the existence and uniqueness of Nash equilibrium for the above non-cooperative game is presented. The simulation results denote that the USUTPC is quiet simple and reasonable. Meanwhile, the influence of different smooth parameter and price factor on simulation result is analyzed. -
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