Power Management in MIMO Ad Hoc Networks: A Game-Theoretic Approach
Power Management in MIMO Ad Hoc Networks: A Game-Theoretic Approach
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DOI：
10.1109/twc.2007.348307
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发表时间：
2007-04
影响因子：
10.4
通讯作者：
C. Liang;K. Dandekar
中科院分区：
文献类型：
--
作者：
C. Liang;K. Dandekar
本文认为，在无线自组织网络中使用MIMO技术的干扰特性和管理。每个链路的功率分配被构建成一个非合作博弈，其中效用函数被确定并最大化。由于较差的信道条件，一些链路具有非常低的数据传输速率，即使它们的发射功率很高。因此，提出了一种用于关闭链路的机制，以减少同信道干扰并提高能量效率。多用户注水和梯度投影的方法进行了比较，提出了博弈论的方法在系统容量和能源效率。仿真结果表明，采用该方法和链路关闭机制可以使MIMO自组织网络达到最高的能量效率和最高的系统容量
This paper considers interference characterization and management in wireless ad hoc networks using MIMO techniques. The power allocation in each link is built into a non-cooperative game where a utility function is identified and maximized. Due to poor channel conditions, some links have very low data transmission rates even though their transmit powers are high. Therefore, a mechanism for shutting down links is proposed in order to reduce cochannel interference and improve energy efficiency. The multiuser water-filling and the gradient projection methods are compared with the proposed game theoretic approach in terms of system capacity and energy efficiency. It is shown that using the proposed method with the link shut-down mechanism allows the MIMO ad hoc network to achieve the highest energy efficiency and the highest system capacity