The potential of multiantenna interference cancellation receiver algorithms for increasing the uplink throughput inWLAN systems such as 802.11 is investigated. The medium access control (MAC) in such systems is based on carrier sensing multiple-access with collision avoidance (CSMA/CA), which itself is a powerful tool for the mitigation of intrasystem interference. However, due to the spatial d...

Port-based network access control makes use of the physical access characteristics of IEEE 802 Local Area Networks (LAN) infrastructures in order to provide a means of authenticating and authorizing devices attached to a LAN port that has point-to-point connection characteristics, and of preventing access to that port in cases in which the authentication and authorization process fails.

Background: The enjoyment of different walks of life of health care is one of the top priorities. To this end, access is a precondition for the establishment of justice in human societies. Given that keeping the health of some groups in societies is of special importance due to their special age-physical conditions, the present study aimed to investigate the access of children and adolescents u...

Wireless access networks are evolving rapidly and hold the promise of significantly altering the landscape for broadband competition. In a companion paper, we explained why wireless networks are unlikely to converge toward the sort of broadband platform network exemplified by wired Next Generation Access Networks. In this paper we present in more detail the future architecture we see most likel...

This paper presents methodologies for dimensioning access networks based on ATM technology, taking as a case study the Passive Optical Access Network (PON) being developed as part of the Broadband Loop (BBL) project, from the European Program ACTS Advanced Communications Technology and Services.

The access network displays an important particularity that the locations of the network components strongly depend on geometrical features such as road systems and a city’s architecture. This paper deals with the distributions of point-to-point connection lengths that play a major role in current problems in the analysis and planning of networks. Using the mathematical framework of stochastic ...

Local access network technologies tend to take advantage of the potentially huge capabilities of fiber communication to deliver faster and more various services to end users. There has been considerable research effort in implementing access networks optically. These optical access technologies were developed particularly under certain circumstances, each of which has its own application domain...