AbstructDynamic Channel allocation in Cellular Networks have become very popular off late due to the flexibility obtained by using any of the available channels in any cell as long as the Interference level is below a given threshold. In our problem we study Cellular networks under Dynamic Channel Allocation and propose a Two Dimensional Markov Chain model to analyze the performance of the syst...

In DS-CDMA cellular communications systems, the single frequency reuse can be utilized. Since large other-cell interference is produced, the well known soft handover or site diversity must be used. If the single frequency reuse is not utilized to avoid the other-cell interference, we will face the frequency allocation problem, similar to FDMA systems. In this paper, a DS-CDMA cellular system us...

Channel assignment in multi-channel multi-radio wireless mesh networks is a powerful resource management tool to exploit available multiple channels. Channels can be allocated either statically based on long-term steady state behavior of traffic or dynamically according to actual traffic demands. It is a common belief that dynamic schemes provide better performance; however, these two broad cla...

E cient allocation of communication channels is critical for the performance of wireless mobile computing systems. The centralized channel allocation algorithms proposed in literature are neither robust, nor scalable. Distributed channel allocation schemes proposed in the past are complicated and require active participation of the mobile nodes. These algorithms are unable to dynamically adjust...

A cellular network serve the high service demands of the indoor users it is very expensive to obtain macrocell coverage which results in requirement of new methods to solve problem of high capacity indoor coverage femto cell is one of the solutions. Deployment of femto cell networks embedded into macro cell coverage improves the coverage, capacity and quality of service in indoor environments. ...

Low-Earth Orbit (LEO) satellite systems are intended to have an important part of the future generation of mobile telecommunication systems. They aim to provide diierent services to various populations of users. Each class of users requires a certain Quality of Service (QoS) and thus a given part of the shared channel resource. In this paper, LEO satellite systems based on an earth-xed cell con...

Abstract— Low-density parity-check (LDPC) codes are analyzed using density evolution techniques for a frequency-nonselective, time-selective fading channel where the fading affects both the amplitude and the phase of the transmitted signal. To aid the channel estimation process, pilot symbols are transmitted periodically. The performance of several message-passing estimation/decoding algorithms...

To solve the problem that traffic network of rapid change is easy to fall into the situation of network congestion, based on the network load information, we use the average transmission time and local interface queue length information to find the path of the load balancing, and select minimum load channel through load-aware channel allocation. Considering interference suppression, load balanc...

The WiMAX (IEEE 802.16) technology offers a mechanism to create a multi-hop mesh network and provides a low cost alternative to the cabled access networks. This paper proposes a fuzzy rule based channel allocation technique for efficient spectrum management in multi-channel IEEE 802.16 network (WiMAX). The Subscriber Stations are categorized on the basis of their average traffic pattern. The fr...

Power Line Communications (PLCs) are characterized by a high selectivity of both noise profiles and channel frequency responses which gives importance to the resource allocation problem. Bit-loading has become the acknowledged tool for maximizing system performance over frequency selective channels thanks to its sub-channel-tailored power allocation and has been, therefore, commonly applied in ...