The s-mote: a versatile heterogeneous multi-radio platform for wireless sensor networks applications

This paper presents a novel architecture and its implementation for a versatile, miniaturised mote which can communicate concurrently using a variety of combinations of ISM bands, has increased processing capability, and interoperability with mainstream GSM technology. All these features are integrated in a small form factor platform. The platform can have many configurations which could satisfy a variety of applications’ constraints. To the best of our knowledge, it is the first integrated platform of this type reported in the literature. The proposed platform opens the way for enhanced levels of Quality of Service (QoS), with respect to reliability, availability and latency, in addition to facilitating interoperability and power reduction compared to existing platforms. The small form factor also allows potential of integration with other mobile platforms including smart phones

Functional Analysis of a SDR Based Bluetooth/HiperLAN Terminal Demonstrator

|In our Software Defined Radio (SDR) project we aim at combining two different types of standards, Bluetooth and HiperLAN/2 on one common hardware platform. HiperLAN/2 is a high-speed Wireless LAN (WLAN) standard, whereas Bluetooth is a low-cost and low-speed Personal Area Network (PAN) standard. An SDR system is a °exible radio system that is re-programmable and reconfigurable by software in order to cope with its multi-service, multi-standard and multi-band environment. Goal of our project is to generate knowledge about designing the front end of an SDR system where especially an approach from both analog and digital perspective is essential.To what extent can we use the HiperLAN/2 receiver hardware for our Bluetooth receiver? In this paper we present a functional architecture that brings the architectural descriptions of both standards to an equal level. This SDR functional architecture is used in the sequel of the project for a number of purposes, of which we mention 1. Definition of reference points (for requirements definition purposes). 2. Definition of interfaces (potential alignment with SDR Forum). 3. Delimitation of our demonstrator (what is it that is going to be built). 4. Identification of inter-standard functional integration challenges

Design of Digital Frequency Synthesizer for 5G SDR Systems

The previous frequency synthesizer techniques for scalable SDR are not compatible with high end applications due to its complex computations and the intolerance over increased path interference rate which leads to an unsatisfied performance with improved user rate in real time environment. Designing an efficient frequency synthesizer framework in the SDR system is essential for 5G wireless communication systems with improved Quality of service (QoS). Consequently, this research has been performed based on the merits of fully digitalized frequency synthesizer and its explosion in wide range of frequency band generations. In this paper hardware optimized reconfigurable digital base band processing and frequency synthesizer model is proposed without making any design complexity trade-off to deal with the multiple standards. Here fully digitalized frequency synthesizer is introduced using simplified delay units to reduce the design complexity. Experimental results and comparative analyzes are carried out to validate the performance metrics and exhaustive test bench simulation is also carried out to verify the functionality