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arXiv 1707.00513cs.NI
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基于功率域信道估计的干扰协调

Interference Coordination via Power Domain Channel Estimation

Chao Zhang, Vineeth Varma, Samson Lasaulce, Raphael Visoz

摘要:

提出了一种新的技术,它使每个发射机获取全局信道状态信息(CSI)从单独的接收信号功率测量的唯一知识,这使得专用的反馈或发射机间信令信道不必要的。为了使这成为可能,我们诉诸于一个全新的技术,其关键思想是利用发射功率电平作为符号来嵌入信息和观测到的干扰作为通信信道的发射机可以用来交换协调信息。虽然所使用的技术允许在发射机之间交换任何种类的{低速率}信息,但是这里的重点是交换本地CSI。所提出的过程还包括允许估计本地CSI的阶段。一旦发射机获得了全局CSI的估计,它可以用于优化依赖于它的任何效用函数。虽然使用相同类型的测量的算法,如迭代注水算法(IWFA)实现了应用于单个效用的顺序最佳响应动态(BRD),但由于全局CSI的可用性,BRD可以应用于效用和。大量的数值结果表明,可以获得显着的收益,这是不需要额外的在线信令。

英文摘要:

A novel technique is proposed which enables each transmitter to acquire global channel state information (CSI) from the sole knowledge of individual received signal power measurements, which makes dedicated feedback or inter-transmitter signaling channels unnecessary. To make this possible, we resort to a completely new technique whose key idea is to exploit the transmit power levels as symbols to embed information and the observed interference as a communication channel the transmitters can use to exchange coordination information. Although the used technique allows any kind of {low-rate} information to be exchanged among the transmitters, the focus here is to exchange local CSI. The proposed procedure also comprises a phase which allows local CSI to be estimated. Once an estimate of global CSI is acquired by the transmitters, it can be used to optimize any utility function which depends on it. While algorithms which use the same type of measurements such as the iterative water-filling algorithm (IWFA) implement the sequential best-response dynamics (BRD) applied to individual utilities, here, thanks to the availability of global CSI, the BRD can be applied to the sum-utility. Extensive numerical results show that significant gains can be obtained and, this, by requiring no additional online signaling.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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