Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor Networks
In the packet access of wireless sensor networks, a distributed access protocol is employed to avoid packet collision but it also causes delay. Therefore, real time data collection is difficult. In wireless communication for simultaneous multidata collection (WC-SDC), sensed data are projected onto...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
SAGE Publishing
2015-08-01
|
Series: | International Journal of Distributed Sensor Networks |
Online Access: | https://doi.org/10.1155/2015/946760 |
id |
doaj-91665479dd09462fad4643643b330fe0 |
---|---|
record_format |
Article |
spelling |
doaj-91665479dd09462fad4643643b330fe02020-11-25T03:38:22ZengSAGE PublishingInternational Journal of Distributed Sensor Networks1550-14772015-08-011110.1155/2015/946760946760Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor NetworksRyo Myoenzono0Osamu Takyu1Keiichiro Shirai2Takeo Fujii3Mai Ohta4Fumihito Sasamori5Shiro Handa6 Shinshu University, No. 4-17-1, Wakazato, Nagano 380-8553, Japan Shinshu University, No. 4-17-1, Wakazato, Nagano 380-8553, Japan Shinshu University, No. 4-17-1, Wakazato, Nagano 380-8553, Japan The University of Electro-Communications, No. 1-5-1, Chofugaoka, Chofu-shi, Tokyo 182-8585, Japan Fukuoka University, No. 8-19-1, Nanakuma, Jonan, Fukuoka 814-0180, Japan Shinshu University, No. 4-17-1, Wakazato, Nagano 380-8553, Japan Shinshu University, No. 4-17-1, Wakazato, Nagano 380-8553, JapanIn the packet access of wireless sensor networks, a distributed access protocol is employed to avoid packet collision but it also causes delay. Therefore, real time data collection is difficult. In wireless communication for simultaneous multidata collection (WC-SDC), sensed data are projected onto the parameters of the wireless communication. The specific feature of the sensed data appears in received signals. Even if the transmitted signal from each sensor collides by simultaneous access, the mixture sensed can be separated by using the specific features. Therefore, the real time data collection is achieved. However, frequency mismatch causes the fluctuation of sensed data, which gives the adverse impact to data separation. In this paper, a data tracking method is used for the data separation in the WC-SDC. We clarify the accuracy of data separation and the impact from the frequency offset. We propose a method for coping with the frequency offset and the error tracking. From the numerical results, our proposed method accurately achieves data separation even under 7% frequency offset normalized by the minimum frequency resolution.https://doi.org/10.1155/2015/946760 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ryo Myoenzono Osamu Takyu Keiichiro Shirai Takeo Fujii Mai Ohta Fumihito Sasamori Shiro Handa |
spellingShingle |
Ryo Myoenzono Osamu Takyu Keiichiro Shirai Takeo Fujii Mai Ohta Fumihito Sasamori Shiro Handa Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor Networks International Journal of Distributed Sensor Networks |
author_facet |
Ryo Myoenzono Osamu Takyu Keiichiro Shirai Takeo Fujii Mai Ohta Fumihito Sasamori Shiro Handa |
author_sort |
Ryo Myoenzono |
title |
Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor Networks |
title_short |
Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor Networks |
title_full |
Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor Networks |
title_fullStr |
Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor Networks |
title_full_unstemmed |
Data Tracking and Effect of Frequency Offset to Simultaneous Collecting Method for Wireless Sensor Networks |
title_sort |
data tracking and effect of frequency offset to simultaneous collecting method for wireless sensor networks |
publisher |
SAGE Publishing |
series |
International Journal of Distributed Sensor Networks |
issn |
1550-1477 |
publishDate |
2015-08-01 |
description |
In the packet access of wireless sensor networks, a distributed access protocol is employed to avoid packet collision but it also causes delay. Therefore, real time data collection is difficult. In wireless communication for simultaneous multidata collection (WC-SDC), sensed data are projected onto the parameters of the wireless communication. The specific feature of the sensed data appears in received signals. Even if the transmitted signal from each sensor collides by simultaneous access, the mixture sensed can be separated by using the specific features. Therefore, the real time data collection is achieved. However, frequency mismatch causes the fluctuation of sensed data, which gives the adverse impact to data separation. In this paper, a data tracking method is used for the data separation in the WC-SDC. We clarify the accuracy of data separation and the impact from the frequency offset. We propose a method for coping with the frequency offset and the error tracking. From the numerical results, our proposed method accurately achieves data separation even under 7% frequency offset normalized by the minimum frequency resolution. |
url |
https://doi.org/10.1155/2015/946760 |
work_keys_str_mv |
AT ryomyoenzono datatrackingandeffectoffrequencyoffsettosimultaneouscollectingmethodforwirelesssensornetworks AT osamutakyu datatrackingandeffectoffrequencyoffsettosimultaneouscollectingmethodforwirelesssensornetworks AT keiichiroshirai datatrackingandeffectoffrequencyoffsettosimultaneouscollectingmethodforwirelesssensornetworks AT takeofujii datatrackingandeffectoffrequencyoffsettosimultaneouscollectingmethodforwirelesssensornetworks AT maiohta datatrackingandeffectoffrequencyoffsettosimultaneouscollectingmethodforwirelesssensornetworks AT fumihitosasamori datatrackingandeffectoffrequencyoffsettosimultaneouscollectingmethodforwirelesssensornetworks AT shirohanda datatrackingandeffectoffrequencyoffsettosimultaneouscollectingmethodforwirelesssensornetworks |
_version_ |
1724542528124878848 |