In speaker verification over public telephone networks, utterances can be obtained from different types of handsets. Different handsets may introduce different degrees of distortion to the speech signals. This paper attempts to combine a handset selector with (1) handset-specific transformations and (2) handset-dependent speaker models to reduce the effect caused by the acoustic distortion. Spe...

With the growing momentum of wireless revolution and mCommerce explosion, it is evident that mobile devices are becoming a critical component of the new digital economy. As mobile markets continue to mature, being able to pay using the mobile handset will be key to the development of next generation services. The current market penetration of mobile phones in conjunction with the expected growt...

Customer clustering is used to understand customers’ preferences and behaviors by examining the differences and similarities between customers. Kohonen vector quantization clustering technology is used in this research and is compared with Kmeans clustering. The data set consists of customer records obtained from a mobile telecommunications service provider. The customers are clustered using va...

The fraudulent use of telecommunications networks is costing the industry billions of dollars in lost revenue each year. The opportunities for fraudulent activity are particularly great in mobile communications as a result of the transport medium and the desire of network operators to attract large numbers of users quickly. This paper reports on the problems currently faced by mobile phone netw...

This chapter provides an overview of the key factors that influence the Quality of Experience (QoE) of mobile TV services. It compiles the current knowledge from empirical studies and recommendations on four key requirements for the uptake of mobile TV services: handset usability and its acceptance by the user, the technical performance and reliability of the service, the usability of the mobil...

Driven by a competitive business climate, handset user interface design is receiving a great deal of study and attention. Technology advances have turned the mobile phone into the ultimate portable tool for information, communications, productivity, and entertainment. Designing a user interface (UI) that can handle these capabilities—and still remain useful, usable, and uncomplicated—is the cha...

The goal of our work is to give a user equipped with an RFID-enabled mobile handset (mobile phone, PDA, laptop. . . ) the ability to access contents of distant elements of the system (tags or handsets), without physically moving to them and without using a Wireless Area Network. Our solution consists in an RFID-based Distributed Shared Memory (RDSM). After describing RDSM, we present its demons...

A novel monopole internal antenna for mobile handsets is presented. The antenna, called the MB antenna, is a modified monopole whose radiating element is implemented in parallel proximity of a ground plane hence allowing for use as an internal antenna in handset applications. Simulation studies indicate that the proposed MB antenna has superior performance over PIFA antennas commonly used in mo...

As indoor use of mobile phones is growing, there is increasing interest in a reliable solution to enhance indoor communications which often suffer from high signal attenuation leading to unacceptable call quality. The appearance of the dual-mode handset which supports cellular technology e.g. GSM, when the user is located outdoor and wireless technology e.g. WiFi, when the user is indoors, brin...