Non-orthogonal multiple access (NOMA) is an emerging technique promising to accommodate the increasing data rate requirements of next generation networks. In power-domain (PD) NOMA, this challenge addressed by allocating two or more users on each orthogonal resource block while assigning significantly different power levels all users. Recently, interesting alternative conventional PD-NOMA has b...

This paper explores a spectrally efficient, variable rate transmission scheme under a service outage constraint for a block fading channel model. The service outage constraint is motivated by real time variable rate applications. In a service outage, the transmission code rate is below a given basic rate and may in fact be zero. Unlike an information outage in the capacity versus outage problem...

The outage probability in a network of cooperative unmanned airborne vehicles (UAVs) over generalized fading channels is studied analytically using finite mixture with expectation maximization technique. A relay-based topology with one ground control unit (GCU) is considered, where the cooperative UAVs can communicate with the GCU directly or through relay. The application the UAV assigned for,...

Center for Wireless Communications, University of California San Diego 9500 Gilman Drive – La Jolla, CA 92093-0407, USA – fax: +1-619-534-2486 e-mail: [email protected] – http://www-cwc.ucsd.edu/~zorzi Abstract— In this paper, we present an analytical framework for the computation of the outage probability, the outage duration and the frequency of outage. A Markov description is assumed for th...

We address a fundamental question in wireless networks that, surprisingly, has not been studied before: what is the maximum density of concurrently active links that satisfy a certain outage constraint? We call this quantity the spatial outage capacity (SOC), give a rigorous definition, and analyze it for Poisson bipolar networks with ALOHA. Specifically, we provide exact analytical and approxi...