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Greening Wireless Relay Networks: An SNR-Aware Approach

机译：绿化无线中继网络：SNR感知方法

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摘要

With the exploding popularity of wireless communication, the radio spectrum has become a scarce commodity. To further improve the network capacity, various solutions have been proposed to increase spectrum efficiency and network throughput. Small cell network is one of these new trends for next generation mobile network design. One model is using relay stations (RS) as small cell providers to achieve extended coverage, lower cost, and higher network capacity. Considering multiple related physical constraints such as channel capacity, signal to noise ratio () requirement of subscribers, relay power and network topology, this paper studies a joint signal-aware RS placement and power allocation problem with multiple base stations in wireless relay networks. We presented approximation schemes which first find a minimum number of RS, using maximum transmission power, to cover all the subscribers meeting each requirement, and then ensure communications between any subscriber to a base station by adjusting the transmission power of each RS. Numerical results are presented to confirm the theoretical analysis of our schemes, and to show strong performances of our solutions.
机译：随着无线通信的迅速普及，无线电频谱已成为稀缺商品。为了进一步提高网络容量，已经提出了各种解决方案来增加频谱效率和网络吞吐量。小型蜂窝网络是下一代移动网络设计的这些新趋势之一。一种模型是使用中继站（RS）作为小型小区提供商，以实现扩展的覆盖范围，降低成本和提高网络容量。考虑到多个相关的物理约束，例如信道容量，用户的信噪比（）要求，中继功率和网络拓扑，本文研究了无线中继网络中多个基站的联合信号感知RS放置和功率分配问题。我们提出了一种近似方案，该方案首先使用最大传输功率找到最少数量的RS，以覆盖满足每个要求的所有用户，然后通过调整每个RS的传输功率来确保任何用户与基站之间的通信。数值结果表明了我们的方案的理论分析，并显示了我们的解决方案的强大性能。

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