Power efficiency of cooperative broadcast in 1-D dense networks with interference

Abstract

In this paper, we study the power efficiency of cooperative broadcast in high-density 1D networks. This is an extension to our previous work which assumed interference-free transmission using single-shot transmission protocol [1]. In this work, interference is taken into account by introducing continuous source transmission protocol. Sufficient condition for successful broadcast is derived and the power consumption is compared with noncooperative multihop broadcast. Received signals are assumed to be attenuated under simple deterministic pathloss such that the pathloss exponent is greater than 1. We use continuum approximation which effectively models high node-density networks. We compare cooperative and noncooperative broadcast in terms of power efficiency and show that cooperative broadcast is more efficient under the bidirectional transmission while it is power inefficient if the transmission is unidirectional.