In [2], the authors have defined a new coverage process motivated by many SINR (signal to interference noise ratio) models in wireless communications. In [3], it was observed that assuming Rayleigh fading of powers (i.e, exponentially distributed powers) makes the analysis more tractable. In particular, quantities such as the probability of coverage could be given neater expressions. In this re...

We consider the problem of Joint Routing, Scheduling and Power-control (JRSP) problem for multihop wireless networks (MHWN) with multiple antennas. We extend the problem and a (sub-optimal) heuristic solution method for JRSP in MHWN with single antennas. We present an iterative scheme to calculate link capacities(achievable rates) in the interference environment of the network using SINR model....

Focusing on the downlink, we consider a base station (BS) and the cell it covers. The Superposition Coding (SC), also referred to as Non Orthogonal Multiple Access (NOMA), is implemented. We propose an analytical model of the wireless cell covered by the BS. Based on this model, we establish a closed form expression of the minimum transmit power of the base station, needed to achieve a given SI...

Given a set of nodes V, where each node has some data value, the goal of data aggregation is to compute some aggregate function in the fewest timeslots possible. Aggregate functions compute the aggregated value from the data of all nodes; common examples include maximum or average. We assume the realistic physical (SINR) interference model and no knowledge of the network structure or the number...

In DS-CDMA communications, the conventional receiver is the RAKE receiver. In the downlink (base station to mobile) signalling with celldependent scrambling, orthogonal codes and a common channel for all the users, this receiver does not maximize the Signal-to-Interference-plus-Noise Ratio (SINR) at its output. Another receiver, with the same structure as the RAKE receiver, is suitable for down...

In this paper, by means of simulations, we evaluate the uplink (UL) performance of an Internet of Things (IoT) capable ultra-dense network (UDN) in terms of the coverage probability and the density of reliably working user equipments (UEs). From our study, we show the benefits and challenges that UL IoT UDNs will bring about in the future. In more detail, for a low-reliability criterion, such a...

In this report we propose an approximation of the outage probability of the Signal to Interference plus Noise Ratio for a CDMA system in a Rayleigh-lognormal fading environment. Specifically, the SINR is approximated as an overall lognormal random variable. The approximation moves from the one proposed in [1] for the product of Rayleigh-lognormal random variables, and from the method presented ...

In cellular systems, antenna tilt and transmit power are two most important parameters for tuning the performance. An optimal antenna tilt has strong impact in interference mitigation which leads to a better coverage and capacity in interference limited system like LTE. Legacy optimization procedures require drive test to tune these parameters. In this paper, an autonomous configuration scheme,...

In this paper, we study the setting of carriersensing range in 802.11 networks under the (cumulative) physical interference model. Specifically, we identify a carrier-sensing range that will prevent collisions in 802.11 networks due to carrier-sensing failure under the physical interference model. We find that the carrier-sensing range required under the physical interference model must be larg...

A discrete-time model of DS-CDMA signalling using multiple transmit and receive antennas employing linear transceiver filters is derived. For each link, connecting a base-station to a wireless mobile user, the downlink signal to interference plus noise ratio after despreading is derived analytically, and as a by-product an exact closed-form solution of the orthogonality factor is obtained. The ...