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Telecommunications PDF Print E-mail
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Sunday, 03 January 2010 08:01

In the field of Telecommunications the group works on communication systems, networks and services. Performs system analysis and design, channel measurement, and prototyping relating to a wide range of wireless applications, including wireless local area network (WLAN) and satellite communications, with focus on the lower layers of communication networks. Telecommunication issues are addressed both in terms of organization and management of long-distance communication – interconnection of devices, modulations - and in terms of the physical implementation of the devices.

Within these fields the major research activities of the MicTel Lab Group are focused in the following research areas:

  • Digital Communications, Radio-frequency and high-frequency wireless system design, Wireless transceiver design, Ultra-Wideband architectures, Mobile Communications, Satellite Communications, WLAN and LTE Design and Applications
  • Embedded Telecommunications systems design, Software Radio Systems and Digital Signal Processing Techniques, DSP and FPGA based trenceivers, Adaptive (smart) antennas for wireless networks, array antenna beamforming
  • Electromagnetic modelling and simulation, Electromagnetic Compatibility-broadly addressing the monitoring of electromagnetic pollution and interference, Signal Covering Measurements, Open area test site and in site Field Measurements, Signal Propagation, Electromagnetism-antennas for communication systems and propagation, Measuring and metrology-including systems and devices at both low and high frequencies
  • Radio frequency and microwave electronics including wireless equipment, integrated circuits and devices for high frequency communications; microelectronics, including both digital and analog microsystems and circuits

The work carried out in this topic is well known and it has been divulged through the highest impact Scientific Journals, Technical Magazines and International Conferences and Workshops.

The MicTel communication platform has a range of state-of-the-art scientific equipment and software that is available to MicTel Research Group, to academic laboratories and to industrial research through private service provision arrangements.

 

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Digital Communications
MicTel Lab Group research interests in Digital Communications focuses in:
Mobile and wireless communications
Wireless communication solutions are becoming increasingly important, due to their ease and flexibility of deployment, their enabling of mobile and nomadic communications as well as coverage in remote locations, and the freedom that comes with the lack of cables. Recent years have also seen large advances in basic enabling technologies and a much-improved fundamental understanding of how to exploit wireless channels most efficiently.
Main research activities:
Link adaptation (adaptive coding and modulation) for more spectrally efficient communications on time-varying channels
Multicarrier modulation (OFDM) as a physical-layer framework for future wireless systems
Dynamic radio resource allocation and opportunistic multiuser access methods for interference management and increased network capacities
Multiple-antenna (MIMO) systems for improved wireless capacity
Wireless channel modelling, characterization and estimation; and analysis of implementation effects in digital receiver structures.
Wireless sensor networks (WSNs)
Our research work in WSNs is concerned with:
Cross-layer-optimized,
Adaptive and distributed methods for sourcechannel coding,
Modulation, access, routing,
Power control and spectrum allocation.
Multiuser communications
Modern communication systems involve not just one sender and one receiver, but many of them. These users share a common medium, e.g. the air for cellular communications and wireless local area networks, and a cable for the ethernet and digital subscriber loops. On the common medium the signals of many users are superimposed onto each other. This superposition creates unwanted interference between signals. This interference can be mitigated by means of digital signal processing, but often requires large computational power.
In order to better understand the complex interactions in a multiuser communication system with several hundreds of users, one can draw analogies to statistical physics, where a large number of particles interact with each other.
The framework of multiuser detection is very broad and general and also includes several problems in digital communications which do not involve several users as special cases, e.g. communication via antenna arrays and communication over dispersive, i.e. multipath, channels.

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Satellite Communications
Our research work is concerned with:
High-Sensitivity GNSS receivers, Assisted GNSS, Software implementation of GNSS Receivers,
Analysis of Innovative Signals for future GNSS,
Analysis and implementation of advanced digital signal-processing techniques aiming at improving the sensitivity of GNSS receivers,
Design and development of NAV/COM solutions,
Simulation and signal analysis of advanced navigation systems (GPS, Galileo, etc),
Design of algorithms and innovative architecture for Satellite Navigation Receivers,
GPS/CDMA receiver architectures, flexible and efficient GNSS receiver architectures

tele3 Smart Antennas
MicTel Lab Group research interests in Smart Antennas focuses in:
Application of multiple antennas to wireless communication systems; this includes multiple-input-multiple-output (MIMO) architectures, smart antennas, and adaptive arrays.
Advance multiple antenna transmit and receive schemes
MIMO networks optimisation and deployment issues
Antenna technology and propagation aspects for multiple antenna systems
multiple antenna communications,
signal processing for future generation wireless systems,
spatio-temporal channel modelling and
re-configurable wireless systems supporting adaptivity to varying network conditions.
tele4 Software Radio Systems and Digital Signal Processing Techniques
MicTel Lab Group has competence in Software Radio systems which are extending now towards Cognitive Radio systems.
Our research focuses on:
Software radio systems - Cognitive Radio systems,
Radio system implementation (analog and digital),
RF system design,
Communication and radar applications of DSP,
communication system simulation and analysis,
spread spectrum systems (commercial and military),
Wireless CDMA, and FPGA applications for DSP,
Theory and evaluation of networks and systems, with a particular emphasis on network control, traffic management system optimization, modeling, and simulation,
Integrated voice, data, and video systems,
Networking using lightwave and wireless technologies,
Theory and technologies that enable the delivery of reliable information in support end-user applications independent of the access technology.
tele5 Embedded Telecommunications Systems
MicTel Lab Group research interests in electromagnetic modelling and simulations focuses in:
Digital signal processing in hardware (for digital video, image processing, audio, network environments and other applications),
DSP-FPGA implementations and ASIC designs, prototyping, VHDL synthesis on specific target technologies,
PCB design, specialized in RF layout,
High-speed digital circuit design,
Hardware architectures and implementations for transmission and processing of high-bitrate (video) data streams,
Test and verification (functional, test pattern generators)
tele6 Electromagnetic modelling and simulation
MicTel Lab Group research interests in electromagnetic modelling and simulations focuses in:
3D Time domain based on Finite Differential Time Domain,
2D Frequency domain based on the moments method,
Specific Antenna design, simulation, achievement and characterization,
Dedicated test fixture (coaxial, waveguide/microstrip transition, etc),
Passive and active component modelisation (coupled lines, inductance, bounding, etc)

 

 Related Publications in Telecommunications

 

 

 

Last Updated on Monday, 04 January 2010 09:04