2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) | 2019
Distributed Feedback-Aided Subspace Concurrent Opportunistic Communications
Abstract
This paper deals with the distributed subspace agreement problem for opportunistic communications in time division duplex (TDD) distributed networks. Since scenario-adapted opportunistic transmission schemes rely on locally sampled observations from the wireless environment, degrees-of-freedom (DoF) sensed as available at any node may differ. Transmitting information without agreeing the common active subspace may incur in a performance loss due to noise enhancement, energy loss and inter-system interference. In this context, we propose two subspace concurrence schemes with and without side information about neighboring user s DoF.