Abstract—Multiuser systems can benefit from multiuser diversity by assigning channels to users with better channel conditions at different time instants. In this paper, we present an opportunistic random-access scheme for orthogonal frequency-division multiple-access-based indoor power

Abstract: Femtocells are deployed to improve the cellular coverage and network capacity in indoor area. Despite their great indoor coverage, the implementation of femtocell by high number of subscribers causes serious interference problem between femto Base Stations (fBSs) and cellular macro Base

frequency-division multiple access (OFDMA) schemes in power-line communications (PLCs) can achieve multiuser diversity gain even in random access. In this paper, we propose a carrier-sense multiple access with a collision-avoidance (CSMA/CA) protocol for OFDMA-based broadband PLC. To achieve the maximum

for indoor PLC communications systems. From the measured data some basic statistical properties of the observed noise were calculated. We have investigated the time and space dependency of the PLC medium noise. We have also studied the correlation between noise power and network's electrical load.

Our results are based on measurements carried out in a residential house in suburban area of Zagreb town, as well as in a medium-size office building (seven stories,

the current local mobile SNR-based decision protocol. In particular, we study the new possibility available in OFDMA-based systems, of satisfying the minimal demand of a mobile station simultaneously by more than one base station. We formalize the problem as an optimization problem, called the all

Abstract — The paper describes an OFDMA based modem for multiple access PowerLine Communications (PLC) over the lowvoltage distribution network. Relying on a preliminary characterization of the French PLC network, a complete description of the modem is given. It concerns in particular the data

Abstract—Smallcell technology is gaining significance as part of the next-generation cellular systems due to their performance benefits in terms of increased network capacity and improved indoor and local coverage. Hybrid access smallcells, which provide service to both indoor as well

in the past few years. This paper presents a study on the PowerLine Communication – PLC technology; as a proposal for a feasible access network for Brazilian Amazon. First, the characteristics of the PLC technology are studied from an implanted indoor prototype at Federal University of Pará. The measures used

and Internet access. In order to implement advanced communication technologies, the complete knowledge of the broadband powerline channel is required. This paper strives to widen understanding of broadband indoor powerline channel. We study the properties of mains cable and indoor PLC channel via