uu.seUppsala University Publications
Change search
Link to record
Permanent link

Direct link
BETA
Björnemo, Erik
Publications (7 of 7) Show all publications
Hong, M., Björnemo, E. & Voigt, T. (2011). Exploring Sensor Network Communication Strategies with the Mote-in-the-Loop Approach. In: 14th Symposium on Wireless Personal Multimedia Communications (WPMC 2011), Brest, Frankrike: . Paper presented at 14th Symposium on Wireless Personal Multimedia Communications (WPMC 2011), October 2011, Brest, France..
Open this publication in new window or tab >>Exploring Sensor Network Communication Strategies with the Mote-in-the-Loop Approach
2011 (English)In: 14th Symposium on Wireless Personal Multimedia Communications (WPMC 2011), Brest, Frankrike, 2011Conference paper, Published paper (Refereed)
National Category
Communication Systems
Research subject
Electrical Engineering with specialization in Signal Processing
Identifiers
urn:nbn:se:uu:diva-162173 (URN)
Conference
14th Symposium on Wireless Personal Multimedia Communications (WPMC 2011), October 2011, Brest, France.
Projects
wisenet
Available from: 2011-11-25 Created: 2011-11-25 Last updated: 2016-04-20
Eriksson, O., Björnemo, E., Ahlén, A. & Gidlund, M. (2011). On Hybrid ARQ Adaptive Forward Error Correction in Wireless Sensor Networks. In: IECON 2011: 37TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY. Paper presented at ICELIE/IES Industry Forum/37th Annual Conference of the IEEE Industrial-Electronics-Society (IECON) NOV 7-10, 2011 Melbourne, AUSTRALIA.
Open this publication in new window or tab >>On Hybrid ARQ Adaptive Forward Error Correction in Wireless Sensor Networks
2011 (English)In: IECON 2011: 37TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY, 2011Conference paper, Published paper (Refereed)
Abstract [en]

The use of wireless technology in the process industry is becoming increasingly important to obtain fast deployment at low cost. However, poor channel quality often leads to retransmissions, which are governed by Automatic Repeat Request (ARQ) schemes. While ARQ is a simple and useful tool to alleviate packet errors, it has considerable disadvantages: retransmissions lead to an increase in energy expenditure and latency. The use of Forward Error Correction (FEC) however offers several advantages. We consider a Hybrid-ARQ-Adaptive-FEC scheme (HAF) based on BCH codes and Channel State Information. This scheme is evaluated on AWGN and fading channels. It is shown that HAF offers significantly improved performance both in terms of energy efficiency and latency, as compared to ARQ.

Series
IEEE Industrial Electronics Society, ISSN 1553-572X
Keywords
wireless sensor networks, process control, hybrid ARQ, forward error correction, FEC, HARQ, adaptive FEC
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-171840 (URN)000299032403047 ()978-1-61284-972-0 (ISBN)
Conference
ICELIE/IES Industry Forum/37th Annual Conference of the IEEE Industrial-Electronics-Society (IECON) NOV 7-10, 2011 Melbourne, AUSTRALIA
Available from: 2012-03-28 Created: 2012-03-28 Last updated: 2012-03-28Bibliographically approved
Rensfelt, O., Hermans, F., Gunningberg, P., Larzon, L.-Å. & Björnemo, E. (2011). Repeatable experiments with mobile nodes in a relocatable WSN testbed. Computer journal, 54(12), 1973-1986
Open this publication in new window or tab >>Repeatable experiments with mobile nodes in a relocatable WSN testbed
Show others...
2011 (English)In: Computer journal, ISSN 0010-4620, E-ISSN 1460-2067, Vol. 54, no 12, p. 1973-1986Article in journal (Refereed) Published
Abstract [en]

Many sensor network application scenarios include mobile nodes, such as a moving sink. Evaluatingsuch applications in a testbed is challenging since the testbed has to support mobile nodes. Wepresent Sensei-UU, a sensor network testbed that supports mobile sensor nodes. The testbedis inexpensive, relocatable and possible to reproduce by other researchers. Its primary designobjectives are to support experiments with repeatable mobility and to support relocating thetestbed deployment to different locations. Mobile sensor nodes are carried by robots that usefloor markings for navigation and localization. The testbed can be used to evaluate applicationsin which sensor nodes move in the order of meters rather than millimeters, e.g., when a humancarries a mobile phone that collects data while passing stationary sensor nodes. To investigate therepeatability of robot movements, we measure the achieved precision and timing of the robots, andfind that our robot localization is accurate to ±1 cm. Furthermore, we investigate variations inradio signal strengths between mobile and stationary nodes. We study the impact of imprecisemovements, external sources of interference, and environmental influences. We conclude thatSensei-UU supports experiments in which these variations are acceptably low to capture small-scalefading phenomena in IEEE 802.15.4.

National Category
Computer Engineering Signal Processing
Research subject
Computer Science with specialization in Computer Communication; Electrical Engineering with specialization in Signal Processing
Identifiers
urn:nbn:se:uu:diva-151814 (URN)10.1093/comjnl/bxr052 (DOI)000298386300005 ()
Projects
WISENETProFuN
Available from: 2011-04-18 Created: 2011-04-18 Last updated: 2018-01-12Bibliographically approved
Hong, M., Björnemo, E. & Voigt, T. (2010). A mote-in-the-loop approach for exploring communication strategies for sensor networks. In: REALWSN 2010, Colombo, Sri Lanka: . Paper presented at REALWSN 2010, Colombo, Sri Lanka.
Open this publication in new window or tab >>A mote-in-the-loop approach for exploring communication strategies for sensor networks
2010 (English)In: REALWSN 2010, Colombo, Sri Lanka, 2010Conference paper, Published paper (Refereed)
National Category
Signal Processing
Research subject
Electrical Engineering with specialization in Signal Processing
Identifiers
urn:nbn:se:uu:diva-133011 (URN)
Conference
REALWSN 2010, Colombo, Sri Lanka
Projects
wisenet
Available from: 2010-11-01 Created: 2010-11-01 Last updated: 2016-04-18Bibliographically approved
Björnemo, E., Johansson, M. & Ahlén, A. (2007). Two hops in one too many in an energy-limited wireless sensor network. In: : . Paper presented at IEEE International Conference on Acoustics, Speech and Signal Processing, Honolulu, Hawaii.
Open this publication in new window or tab >>Two hops in one too many in an energy-limited wireless sensor network
2007 (Swedish)Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-13440 (URN)
Conference
IEEE International Conference on Acoustics, Speech and Signal Processing, Honolulu, Hawaii
Available from: 2008-01-23 Created: 2008-01-23 Last updated: 2016-04-11
Björnemo, E. (2005). Frequency synchronisation in OFDM: A Bayesian analysis. In: IEEE 61st Vehicular Technology Conference.
Open this publication in new window or tab >>Frequency synchronisation in OFDM: A Bayesian analysis
2005 (English)In: IEEE 61st Vehicular Technology Conference, 2005Conference paper, Published paper (Refereed)
Identifiers
urn:nbn:se:uu:diva-75973 (URN)
Available from: 2006-03-10 Created: 2006-03-10
Björnemo, E. (2004). Bluetooth interference suppression in IEEE 802.11b. In: 4th International Symposium on Communications Systems: Networks and Digital Signal Processing.
Open this publication in new window or tab >>Bluetooth interference suppression in IEEE 802.11b
2004 (English)In: 4th International Symposium on Communications Systems: Networks and Digital Signal Processing, 2004Conference paper, Published paper (Refereed)
Identifiers
urn:nbn:se:uu:diva-10715 (URN)
Available from: 2007-04-20 Created: 2007-04-20
Organisations

Search in DiVA

Show all publications