Telecommunication Systems Research Institute-Ινστιτούτο Τηλεπικοινωνιακών Συστημάτων

Research

Unified services digital wireless personal communication networks.
Multiple access communication networks.
Local and Metropolitan Area Broadband networks.
Data transmission over Asynchronous Transfer Mode (ATM) networks.
Centralized and distributed systems for multimedia information broadcasting over communication networks.
Scheduling for multimedia servers.
Scheduling for Data Broadcasting over IP and Wireless Networks.
High-Speed Network Processors.
Low-power encryption and authentication devices for networking environments.
Development of wireless network protocols capable to support the transmission of time sensitive information.
Design, modeling and simulation of large scale networks.
Study, performance evaluation and operational improvement of centralized and distributed systems for the distribution of multimedia content over communication networks.
Development of scheduling methods for multimedia servers supporting heterogeneous requests and guaranteed quality of service (QoS).
Study and implementation of communication networks for:
- Transmission of data, image, speech, and video (Multimedia) in IP networks, wireless networks, high speed networks and satellite links.
- Internet Communications.
- Video-on-demand services over IP networks.
- Information distribution for applications in the areas of Telemedicine, Tele-Control, Telemetry, Tele-work, etc.
- Mobile Multimedia communications over third and fourth generation wireless networks.

Speech processing and recognition, Natural Language understanding.
Speech Coding.
Speech Synthesis.
Acoustic and Language Modeling.
Robust speech recognition and adaptation.
Telephone and Internet Applications of speech recognition, natural language understanding.
Machine Translation.
Multimodal Interfaces.
Development of a continuous speech, large vocabulary, speaker independent speech recognition system.
Services for automated transcription of audio and video signals.
Development of algorithms for speech coding and recognition over mobile networks.
Routing of telephone calls.
Automated transactions over the telephone.
Automatic dictation.
Automation of directory Services.
Voice portals.
Machine translation services.

Convex optimization and applications in optimal cross-layer resource allocation at the physical and admission control layers.
Cooperative and opportunistic communications.
Information theory and applications in wireless communications.
CDMA code design.
Software-Defined Radio (SDR).
Development of coding algorithms for high speed mobile networks.
Design, modeling and simulation of wireless links.
Study, evaluation and operational improvement of mobile communication receivers.
Signal detection in cooperative and non-cooperative multiple-user systems.
Source /call localization estimation in wireless communication networks.
Study and implementation of:
- Radio and Satellite Communications.
- Third Generation Mobile Communications and Code Division Multiple Access (CDMA) networks.
- New Services over third generation, wireless communication networks (UMTS).
FPGA-based devices for Ultra-WideBand (UWB) baseband processing.
Low-Power Low-Cost Ethernet Switch.
High-end Multi-tuple Classification Devices.
Low-cost Bluetooth Access Points (BTAP).

Sensor array processing and beamforming for multi-antenna reception and transmission.
Perturbation theory and applications in performance analysis of communication systems.
Computational geometry and applications in CDMA.
Space-time processing.
Multi-linear algebra, multi-way analysis and applications in blind signal and parameter estimation.
Source separation and localization of multiple radio signals.