We study the development of mobile peer-to-peer (MP2P) traffic and the usage of MP2P applications in Finland during 2005-2007. Research data consists of 1) traffic traces measured from three Finnish GSM/UMTS networks covering the Internet-bound mobile data traffic generated by 80-90% of Finnish mobile subscribers (N > 4,000,000), and 2) usage log files collected with a dedicated Symbian handset...

BenQ, a Taiwanese-based company, grabbed the international headlines on June 7, 2005, when it acquired the money-losing mobile phone division of Germany’s Siemens and launched the brand, BenQ-Siemens. Subsequently the acquisition proved to be a strategic mistake, as the two companies could not successfully integrate. This article tracks BenQ’s acquisition of Siemens, from the perspective of Ben...

The increasing popularity of using wireless devices to handle routine tasks has increased the demand for incorporating multiple-input-multiple-output (MIMO) technology utilize limited bandwidth efficiently. presence comparatively large space at base station (BS) makes it straightforward exploit MIMO technology’s useful properties. From a mobile handset point view, and handset, complex procedure...

This paper presents an overview of trends in low power handset SDR implementations. With the market for SDR-enabled handsets expected to grow to 200M units by 2014, the barriers to efficient handset implementations – both hardware and software – have been removed based on new and innovative architectures. We describe advances in DSP architectures and compilers that are enabling SDR handset impl...

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...

This paper discusses the evolution of mobile services and associated potential for mobile e-commerce. In particular, the current operator-driven business ecosystems are contrasted to the potential mobile Internet revolution. Critical factors and characteristics of cellular and Internet business ecosystems are identified. Potential for radical changes in mobile services business exists if induci...

A design of dual-band balanced antenna structure operating in the 700 and 2600 MHz LTE bands is studied and investigated. The overall dimensions of the radiator are 50 × 18 × 7 mm allowing it to be easily concealed within mobile handsets. A broad-band balun is designed and integrated with the antenna handset in order to provide the feeding network and perform the measurements of the antenna rad...

Handset-free mobile speech communication in a noisy environment requires robust noise suppression with minimal speech degradation. Two solutions for the noise suppression problem are available: either the noise suppression module precedes the speech coder or noise suppression is integrated into the speech coder. Both solutions have been tested with signals picked up in a car under the same cond...

This paper proposes a multiband handset antenna combining PIFA and novel slots on radiating patch of PIFA for mobile applications. Two slots were introduced in order to embody 900 and 1800 MHz band. Radiation patterns are computed in free space as well as in the presence of head. Specific Absorption Rate (SAR) of slotted PIFA antenna is calculated and is compared with the SAR limits in the safe...