Research Activities
Research Grants
Research Consultancy
Research Supervision

Research activities

Wireless Networks
Sensor networks: Design issues and applications of sensor networks.
Delay tolerant networking: Architectures, protocols for nonconventional networking.

Signal Processing for nonconventional radars
MIMO radars:
Multistatic radars and radar networks:

Multisensor fusion and target tracking

Signal Processing for detection and estimation in signal interception
Detection of DSSS signals:
Pulse deinterleaving:

Previous research activities

Real-time software/hardware for DSP processors and FPGAs
Digital receiver design and novel algorithm development: STANAG 4285 compliant HF modem design, GSM-EDGE receiver design. Frequency correction, synchronization, equalization.
Speech processing algorithm development: MELP, very low bit rate 1200 bps proprietary vocoder, ADPCM, echo cancellation.
DSP hardware design: Development of a hardware platform for HF modems using TI TMS320C54X. Development of GSM-EDGE receiver on Xilinx virtex series FPGAs.

Acoustic echo cancellation

Neural networks

Embedded networking and real-time Internet

Wireless communications, blind adaptive algorithms

Multimedia audio databases and signal processing

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Research grants

• Project director, Communication protocols for multiservice next generation wireless Internet (~$60,000). Duration: 36 months, 2005-2008. Supported by TUBITAK in Middle East Technical University for participation in European Union Cost 290 action “Traffic and Qos Management in Wireless Multimedia Networks”.
• Project co-director, Signal analysis techniques. (~$490,000). Duration: 24 months, 2003-2005. Supported by Defense Industries Undersecreteriat in Middle East Technical University.
• Project director, Performance improvement of HF serial modems. (~$150,000). Duration: 18 months, 2000-2001. Supported by TUBITAK-UEKAE in Middle East Technical University.
• Project director, Development of a low bit rate vocoder and videophone. (~$250,000). Duration: 12 months, 1998-1999. Supported by TUBITAK-UEKAE in Baskent University.
• Research associate, Channel equalization techniques for mobile communications (~$225,000). Duration: 36 months, 1995-1998. Supported by EPSRC in Imperial College.
• Research assistant, Enhancement of hands-free communications. (~$1,000,000). Duration: 36 months, 1993-1995. Supported by European Union FP3 in the 6-member consortium including Imperial College.

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Research consultancy and industrial links

• HAVELSAN (2003-  )
• SAVRONIK (2004)
• KAREL (2003), Embedded software provider
• TUBIN (2003)
• TUBITAK-BILTEN (1999-2003)

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Research supervision

• Ayhan Yazıcı, (PhD in progress)
• Yılmaz Kalkan, (PhD in progress)
• Dilek Karabudak, (PhD in progress)
• Ayhan Ircı, (PhD in progress)
• Mustafa Sert, (PhD, 2006) “Structural And Semantic Analysis of Audio Content For Content-Based Querying and Browsing”, METU.
• Ozgur Ertug, (PhD, 2006) “Generalized Random Spreading Performance Analysis of CDMA Over GWSSUS Fading Channels”, METU.
• Cenk Toker, (PhD, 2005, co-supervised) “Signal Processing Algorithms and Architectures for Communication Transceivers”, King's College, London.
• Izzet Ozcelik, (PhD, 2005, co-supervised) “Adaptive System Identification Algorithms and Sequence Estimation In Telecommunication Channels” University of Westminster, London.
• Selma Ozaydin, (PhD, 2001) “Development of a 1200 bps vocoder based on efficient matrix quantization techniques”, METU.
   
• Over 20 MSc theses were supervised.

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