Transmission power optimization of multi-hop spread spectrum packet radio networks

The authors present a model for the analysis of multihop spread spectrum packet radio networks and investigate their performance under various configurations. The analysis incorporates several network parameters such as topology, end-to-end traffic, routing, and node transmission power. The results reveal that high localization of the end-to-end traffic improves the network throughput and results in small performance degradation when the network size increases. As the network connectivity requirement increases, the factor limiting the performance shifts from the receiver availability to the interference. It is found that employing transmission power optimization always improves the throughput. It is shown that the transmission power level of a node has directly proportional relationship to the node isolation level, while it is a weak function of the node congestion level