在這篇論文中，我們介紹兩個方法-距離感知傳輸排程和兩層離散功率控制，它們可以增加大規模無線隨意網路的傳輸容量。傳輸容量是無線隨意網路的區域頻譜效益指標，它受限於中斷約束。研究這兩種方法的動機是觀察是否限制多用戶的干擾可以有效提高無線隨意網路的網路容量。首先我們提出一個機會傳輸排程方案，此方案是利用傳送者到預定接收者之間的距離感知條件，我們稱之為距離感知傳輸排程方案。當傳送者的傳輸距離滿足以傳送者密度為考量的動態門檻約束時，此時排定傳送者允許傳送。再來我們提出關於距離感知傳輸排程下的兩層離散功率控制，這是因為兩層離散功率控制如果滿足某一個特定條件下它是可以減少干擾。我們從平均訊號干擾比方面來說，使用兩層離散功率控制方案推導出的功率比來做功率控制，它能夠優於使用常數功率控制的方案，在此常數功率控制表示使用相同功率。這篇論文提出的兩種方案本質上都是根據傳輸距離的特性，而且利用減少干擾可以達到較高的區域頻譜效益。

In this thesis, we introduce two distinct approaches – distance-aware scheduling and 2-layer discrete power control (DPC), which are able to enhance the transmission capacity of a large-scale wireless ad hoc network. Transmission capacity is an area spectrum efficiency metric of a wireless ad hoc network with an outage constraint. The motivation of studying these two approaches is to investigate whether limiting multiuser interference is an effective means of boosting the network capacity of a wireless ad hoc network. First, we propose an opportunistic scheduling scheme that exploits distance-aware conditions between a transmitter and its intended receiver, termed distance-aware scheduling (DAS) scheme. A transmitter with DAS schedules a transmission when the distance satisfies an density-based dynamic threshold constraint. Next, we propose the 2-layer DPC scheme for DAS since such 2-layer DPC can reduce interference if it is properly designed to satisfy a certain condition. The power control scaling law for the 2-layer DPC scheme is developed, which is able to strictly outperform the constant power control scheme (i.e., no power control scheme) in terms of the average signal-to-interference ratio. Both of the proposed schemes are essentially characterized by transmission distance and can achieve higher area spectrum efficiency due to interference reduction.

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