Anjum Pervez

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When developing a TV White Space (TVWS) system with the available TV spectrum after digital switchover, channel allocation for TVWS devices to avoid interference becomes one of the most challenging problems. In this paper, Simulated Annealing (SA) is applied to solve the problem to minimize the total interference. However, the performance of SA applied to(More)
The future generation wireless networks will demand more intelligent and adaptive handover decision mechanisms to fulfill users' expectations in terms of seamless mobility over extensive area, minimum usage cost, high data rate and adequate QoS provision and so on. The use of fuzzy logic is one of the methods to enhance system intelligence. Most fuzzy logic(More)
Numerous new broadband and multimedia applications have emerged in recent years, in which streaming video services are particularly of interest. Unlike data communication, streaming video requires a subjective measure of quality referred to as the Quality of Experience (QoE), but the subjective evaluation is very time consuming and complex. We are proposing(More)
Future generation wireless networks will demand more intelligent and adaptive handover decision mechanisms to fulfil users' expectations in terms of seamless mobility over extensive area, min imu m price, high data rate, adequate QoS provision and so on. For such a demanding networking environment the handover decision system (HDS) need to be highly(More)
We present the design of two new antennas for an indoor angle-of-arrival based passive UHF RFID tag localization method. First, a circularly polarized patch antenna that can be used as the reader's transmit antenna or as the tag antenna. Second, a circularly polarized three-element patch antenna array for the reader. We use measurements in a 3 m × 3(More)
Intelligent decision engine is necessary to support seamless handover and multimedia services in heterogeneous wireless mobile networks. In this paper, a matched monolithic fuzzy decision engine (FDE), which is tailored to match the QoS and data rate requirements of video streaming traffic, is presented. The proposed decision engine helps to improve the(More)
The spatial localization of passive UHF (ultra-high frequency) radio-frequency identification (RFID) tags is an emerging technology that has reached a high level of interest in industry and research in the last few years. Most solutions are based on classical receive beamforming techniques, like the angle-of-arrival estimation, that are prone to multipath(More)
For preliminary performance evaluation of an UHF RFID system, it is important to have a simple and fast simulation environment available. The calculation of the receive signal power at arbitrary positions of a predefined environment should be fast and accurate to find dead zones where tags cannot be read although they are well within the reader's(More)
Vehicular ad hoc networks (VANETs), similar to other distributed systems, often require a scalable time synchronization service enabling data consistency and coordination. In this paper, we propose a new time synchronization protocol for VANETs, which provides excellent scalability, accuracy and robustness for high mobility traffic scenarios. The new(More)
With the evolution of new services and widespread wireless applications, it is inevitable that there will be intense demand on the radio spectrum resources in the future. Cognitive radio (CR) technology has the potential to optimize the radio spectrum utilization. One of the areas of its application appears to be in Digital TV band. CR technology will have(More)