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The demo illustrates the performance of energy detection spectrum sensing. Time domain energy detection will be shown. Spectrum sensing is crucial for Cognitive Radio Transceiver. The original system under-study in my work is based on a Continuous Time RF Delta Sigma modulator, In the demo — to have the whole concept validated using FPGA board — an emulation of the RF delta sigma modulator is used...
The Air Force Research Laboratory Information Directorate Advanced Computing and Communications Division is developing a new computing architecture, designed to provide high performance embedded computing (HPEC) pod solution to meet operational and tactical real-time processing intelligence surveillance and reconnaissance (ISR) missions. This newly designed system, Agile Condor, is a scalable and...
Nowadays spike-based brain processing emulation is taking off. Several EU and others worldwide projects are demonstrating this, like SpiNNaker, BrainScaleS, FACETS, or NeuroGrid. The larger the brain process emulation on silicon is, the higher the communication performance of the hosting platforms has to be. Many times the bottleneck of these system implementations is not on the performance inside...
This paper describes a custom-built UHF RFID-Reader-Device with functionality to send and receive EPCglobal custom commands. It can be used to access enhanced capabilities in transponders, for example readout of integrated sensors. The device was implemented using a Xilinx FPGA and is fully controllable from a PC through a customizable MATLAB-Interface. This enables a step by step test of newly developed...
Cardiovascular disease remains the main cause of death, and great efforts are spent on the design of ECG body sensors these years. Essential components such as analog frontend and wireless transceivers have been integrated on a compact IC with micro-Watt power consumption. To provide timely warning against the fatal vascular signs, based on the Chaotic Phase Space Differential (CPSD) algorithm, on-sensor...
Reconflgurability of transceivers for wireless communication systems such as GSM, UMTS, WiMAX and WLAN will become increasingly important. Therefore, a flexible and reliable software and hardware architecture based on the software-defined radio (SDR) paradigm is a meaningful concept. SDRs have paved the way towards cognitive radios (CR), which are based on SDRs that additionally sense their environments,...
The following topics are dealt with: power electronics; digital circuits; data converters; video and image processing; wired communication; digital signal processing; analogue circuit; pipelined ADCs; RFID; RF and antenna; MEMS and sensors; biomedical circuits and systems; CMOS power regulator; GPS signal; telephone remote control system; VLSI interconnects; continuous-time delta-sigma modulator;...
This paper presents the design and FPGA hardware implementation of a multiple-input multiple-output (MIMO) system for wireless sensors networks (WSN). This system will offer more parallel channels between the sensor nodes and the base station at the same frequency band, thereby increasing spectral efficiency. The hardware design of the MIMO wireless sensor network system has been described using VHDL...
This paper describes the dynamic spectrum access radio system that was built as part of the DARPA XG program. The DSA system's architecture four principal components (the DSA engine; the environmental sensing (i.e., detection) subsystem; the communications (i.e., radio) subsystem; and a policy module/enforcer) are described. The DSA system's 802.16-based radio hardware is described. One of the field...
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