| Summary: | 碩士 === 國立成功大學 === 資訊工程學系碩博士班 === 96 === Transmission power control in wireless ad hoc networks is to select a proper transmission power to transmit packets to the intended receivers at each node. Transmission power control affects the transmitting signal strength, so it determines the neighboring nodes that can hear the transmitting signal, and creates excessive interference which may cause contention at the neighboring nodes. As a result, it affects the performance of the network, such as network throughput, end-to-end latency and energy consumption.
In this thesis, we propose a distributed transmission power control scheme, which does not degrade throughput and reduces energy consumption, on routing protocols. The main idea of our proposed scheme is to discover more intermediate nodes to help forward packets between the original forwarding nodes pairs which discovered by the shortest-path based routing protocols. Our proposed approach also is a variable-range transmission power control based protocol, thus it can achieve lower latency and higher network capacity while compared with the common-range minimum transmission power control protocol [26]. We also expect the mobility of nodes to adjust the transmission power to ensure a high packet delivery ratio in the wireless mobile ad hoc networks.
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