The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In today's cellular networks, it becomes harder to provide the resources for the increasing and fluctuating traffic demand exactly in the place and at the time where and when they are needed. Moreover, a cellular network which can cover indoor areas and hot-spots is a complicated and expensive task. Therefore, a new hierarchical topology is put forward to solve the problem, and the topology have application...
In multi-hop wireless networks, the way the network topology is defined has a strong impact on routing. This paper deals with topology control in cellular networks with relays. Several topology control algorithms taken from ad-hoc networks are adapted to cellular networks. Most of the algorithms considered here are based on proximity graphs. Performance analysis is carried out in a realistic scenario...
In this paper we define the jointly optimum topology for the duplex transmission (uplink/downlink) in multihop cellular networks which is aware of the intercell interference and a protocol that reconfigures the optimum topology based on the observation of the temporal traffic in the network. In addition we also consider the application of network coding in cellular networks to combine the uplink and...
This paper provides a performance comparison of two macrocellular topologies from the point of view of RF-repeater deployment. The numerical, system level, performance estimation was done in the downlink direction using high speed downlink packet access technology. In addition to a detailed repeater model, a distance dependent orthogonality model for wideband CDMA codes was included in the performance...
In radio mobile cellular networks, the users located at the cell border suffer from a bad quality of service (QoS). Cooperative communication is a promising technique that can overcome this weakness by allowing these users to profit from powerful benefits of spatial diversity. Nevertheless, abstraction is usually made on the impact of the additional multiple access interference inherent to relaying...
This paper proposes an analytical study of the shadowing impact on the outage probability in cellular radio networks. We establish that the downlink other-cell interference factor, f, which is defined here as the ratio of outer cell received power to the inner cell received power, plays a fundamental role in the outage probability. From f, we are able to derive the outage probability of a mobile station...
In this paper we review a 4G vision of deploying a cellular network whose infrastructure topology can be autonomously determined by cellular users. Intelligent spectrum management is required for cellular interference control and mobile handoff management etc. We study an optimization method that maximizes the cell size coverage for user-deployed base stations, e.g. femtocells. The algorithm periodically...
This paper introduces a notion of divide-by-K reuse strategy, which allows for K-orthogonal chunks (sub-zones) of OFDMA data regions to be fully reused for all relay links throughout each cell in a TV-hop relay-enhanced cellular TDD-OFDMA system with KlesN. Our objective is to configure a topology of relay stations subject to the divide-by-K reuse strategy, such that the end-to-end routes for relay...
The optimization of the relaying topology in multihop cellular network should provide the answer to the question who is transmitting to whom, and when, in such a way to insure the best system performance. In the case of temporally and spatially varying traffic distribution the optimal topology will also vary in time and an efficient way for topology reconfiguration is needed in order to maximize the...
The optimization of the relaying topology in multihop cellular network should provide the answer to the question who is transmitting to whom, and when, in such a way to insure the best system performance. In the case of temporally and spatially varying traffic distribution the optimal topology will also vary in time and an efficient way for topology control is needed in order to maximize the system...
One way to reduce the intercell interference in cellular networks is not to transmit strong signals from the cell borders towards the access points directly but rather to relay such transmissions to other users or relays within the cell by using much lower signal levels. This will produce much less interference in adjacent cells. For this reason, we present an intercell interference aware (IIA) network...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.