A handset compensation technique for speaker verification from coded telephone speech is proposed. The proposed technique combines handset selectors with stochastic feature transformation to reduce the acoustic mismatch between different handsets and different speech coders. Coder-dependent GMM-based handset selectors are trained to identify the most likely handset used by the claimants. Stocha...

With the advanced communications systems, integration of 5G bands, including sub-6-GHz and millimeter-wave (mm-wave) bands with existing lower 3G/4G has become an essential need for future mobile handsets. This article proposes between a large-frequency-ratio dual-band tapered slot antenna multisection meander monopole on handset board. The Vivaldi (TSVA) functions as resonant open-ended at low...

This paper presents a new design for an input impedance antenna automatic matching system. In order to achieve this main objective, it is necessary to accomplish several intermediate tasks. On the one hand, a study about the implementation of a generic electronically tunable impedance synthesizer is carried out. Then, a prototype based on the research is constructed, and its characteristics and...

Abstract This paper presents the prototype demonstration where an integrated transmitter circuit drives a mobile handset terminal antenna in order to provide frequency tunability and multiple input output (MIMO) operation across 0.5–4.5 GHz range. The implementation incorporates on-chip weighted signal generation, i.e. amplitude phase scaling sufficient MIMO performance low band (700–960 MHz) h...

in this paper a new low profile substrate integrated waveguide (siw) probe-fed h-plane horn antenna structure with improved gain is proposed. the proposed antenna consists of two waveguides including a rectangular and a taper one, in which both, first and third modes of the structure are simultaneously excited leading to a uniform field distribution along the radiating aperture of the antenna a...

INTRODUCTION ................................................................................... 314 I. A BRIEF ECONOMIC HISTORY OF DISRUPTIVE REVOLUTIONS IN THE HANDSET MARKET ........................... 317 A. Innovative Handsets From the Last Two Decades .................. 317 B. Market Dynamics: Share Changes Among Handset Makers Around the Introduction of the Iconic Device ...................

Bundling of handset and subscription is already a widely used concept. This is being done by the mobile operators because they believe that it increase the appeal to the potential end-users. Another concept that is closely related to bundling of handset and subscription is the subsidization of handsets. A handset subsidy allows the end-users to get their handsets at deep discount, or even for f...

The challenges of 4G are multifaceted. First, 4G requires multiple-input, multiple-output (MIMO) technology, and mobile devices supporting MIMO typically have multiple antennas. To obtain the benefits of MIMO communications systems, antennas typically must be properly configured to take advantage of the independent signal paths that can exist in the communications channel environment. [1] With ...