Topology Control with Outage Probability Constraint in Wireless MIMO Ad Hoc Networks

Topology Control with Outage Probability Constraint in Wireless MIMO Ad Hoc Networks

Wireless Ad Hoc network is composed of a collection of network nodes without fixed infrastructure and applied widely in different application areas. The multi-user multiple-input and multiple-output (MU-MIMO) transmissions with finite-rate feedback channel in wireless Ad Hoc networks may result in co-channel interference and inter-beamform interference. In the paper, we investigate the joint influence of the co-channel interference and inter-beamform interference on the transmission performance. Firstly we derive the outage probabilities in case of dedicated resource assignment and shared resource reuse. With the constraint that the outage probability shall not exceed some specified threshold, we further explore and perform a topology control on the network configurations, and the maximum values of the transmitting range and distribution density of transmitter nodes are obtained respectively. Finally we compare the topology configurations of single user MIMO (SU-MIMO) and MU-MIMO transmissions to evaluate the performance gain of MU-MIMO transmissions. The analytical and numeric results indicate the outage probability performance is influenced by the distribution density of transmitter nodes, especially for co-channel interference-limit system, and the configurations of network topology are restricted by the outage probability performance constraint.