Throughput analysis in multihop packet radio networks

Abstract

The authors have set up a simulation program to evaluate the throughput of a packet radio network (PRN) by comparing different routing strategies in both the static and dynamic PRN topology. They compare link access protocol efficiency of a system with spread spectrum modulation, forward error correction coding with an Aloha like protocol in a multihop network versus Aloha. Code division multiple access (CDMA) and conventional Aloha access techniques are compared, showing that CDMA gives a more reliable and higher throughput. Different routing strategies are compared with static and dynamic networks enabling the understanding of why some of them result in network congestion at lower throughput than others. A result is that for a 16 node network with a grid connectivity, the throughput is increased as soon as the network connectivity was reduced up to an optimum value. >