Abstract — A green code attempts to minimize the total energy per-bit required to communicate across a noisy channel. The classical information-theoretic approach neglects the energy expended in processing the data at the encoder and the decoder and only minimizes the energy required

This paper highlights issues of migrating from mobile internet access towards a distributed service platform. Starting with an analysis of different bearer services the paper surveys integration aspects of location and situation aware services on programmable mobile devices, based on a typical scenario. Keywords: Bluetooth, Location dependent and situation aware services, Wireless Networks, Java phones

Abstract—We studied the behavior of an iterative receiver using protograph based LDPC codes (PG-LDPCC) in an UWB short range communication system. An EXIT-Chart-Analysis is applied by means of density evolution of protographs. We show that AWGN-optimized protograph ensembles perform also well

Abstract — In this paper a multiband UWB signal with polarization diversity is considered in order to maintain as constant as possibile the performance (and consequently the QoS) of a short range communication link. I.

Abstract — A green code attempts to minimize the total energy per-bit required to communicate across a noisy channel. The classical information-theoretic approach neglects the energy expended in processing the data at the encoder and the decoder and only minimizes the energy required

Abstract—High data-rate applications can be foreseen for future ultra-wideband systems in the areas of internet access, multimedia services, wireless interfaces and location-aware ser-vices. Since it is particularly important to design low cost and low power devices, a growing attention will be devoted to the UWB systems with high spectral efficiency. In this paper, higher order modulation schemes are derived for Impulse Radio (IR) systems. The original signalling schemes provide a higher spectral efficiency and permit higher data-rate applications: though the IR systems are based on the use of baseband signals, the introduction of a proper orthogonal basis permits to derive higher order constellations as a linear combination of the elements of the basis with no additional bandwidth. Therefore, the increase of the spectral efficiency also permits to have a higher system throughput. I.

This paper describes a medium access control (MAC) protocol to enable multi-channel operation for dedicated short range communication (DSRC). In particular, we focus on the challenge of supporting potentially high-bandwidth commercial or info-tainment communications between vehicle and roadside

. The short range communication technologies like scatternet formation has not been formally defined in the Bluetooth SIG specifications. As a result, numerous protocols have been proposed. While modeling ad-hoc networking, in general, is complex, the additional restrictions imposed by the Bluetooth

Abstract — This article advocates a novel communication architecture and associated collaborative framework for future wireless communication systems. In contrast to the dominating cellular architecture and the upcoming peer-to-peer architecture, the new form envisions a cellular controlled short-range

Abstract-The key issue of the localization study is that how we can minimize the energy consumption of devices with guaranteeing high degree of accuracy. In this paper, we show that the collaboration among proxy devices with short range communication is helpful to energy-efficiently localize