T
Timo Hämäläinen
Researcher at University of Jyväskylä
Publications - 598
Citations - 8390
Timo Hämäläinen is an academic researcher from University of Jyväskylä. The author has contributed to research in topics: Quality of service & Encoder. The author has an hindex of 38, co-authored 560 publications receiving 7648 citations. Previous affiliations of Timo Hämäläinen include Dalian Medical University & Nokia.
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Ultra-Low Energy Wireless Sensor Networks in Practice: Theory, Realization and Deployment
Mauri Kuorilehto,Mikko Kohvakka,Jukka Suhonen,Panu Hämäläinen,Marko Hännikäinen,Timo Hämäläinen +5 more
TL;DR: The authors draw on their experience in the development and field-testing of autonomous wireless sensor networks to offer a comprehensive reference on fundamentals, practical matters, limitations and solutions of this fast moving research area.
Journal ArticleDOI
A finite-dimensional robust controller for systems in the CD-algebra
TL;DR: The main result of the paper shows that the matrices K/sub k/(s) must satisfy certain stability conditions involving the values of the plant transfer function only at the reference and disturbance signal frequencies.
Journal ArticleDOI
Energy-efficient neighbor discovery protocol for mobile wireless sensor networks
Mikko Kohvakka,Jukka Suhonen,Mauri Kuorilehto,Ville Kaseva,Marko Hännikäinen,Timo Hämäläinen +5 more
TL;DR: An energy-efficient neighbor discovery protocol targeted at synchronized low duty-cycle medium access control (MAC) schemes such as IEEE 802.15.4 and S-MAC that effectively reduces the need for costly network scans by proactively distributing node schedule information in MAC protocol beacons and by using this information for establishing new communication links.
Proceedings ArticleDOI
Software and hardware prototypes of the IEEE 1588 precision time protocol on wireless LAN
TL;DR: The design and implementation of two IEEE 1588 prototypes for wireless LAN (WLAN) are presented and the results achieved are fully comparable to those achieved with wired LAN implementations.
Proceedings ArticleDOI
Positioning with IEEE 802.11b wireless LAN
TL;DR: The prototype implements received signal power level based positioning on IEEE 802.11b wireless LAN (WLAN) platform and includes a host PC, which runs a positioning application, which computes and displays position estimates on the basis of measurements performed by the WLAN adapter.