Optimal link scheduling and power control in CDMA multihop wireless networks

Abstract

We study the problem of radio resource allocation in wireless multihop networks. The main objective is to develop integrated link scheduling and power control policies to maximize the network throughput. Transmitters in the network are subject to average power constraints per link and peak power constraints per node. Subject to these constraints, we find optimal subsets of concurrent transmitters and associated power levels to maximize network throughput, taking into account multi-access interference. We find that when ambient noise levels are sufficiently high, it is generally desirable to enable simultaneous transmissions, even if they are in close geographic proximity. We compare our results against pure CDMA to illustrate the significant gains of our approach. The results in this paper are applicable to multihop and single hop networks.