Performance of a Small Size Sensing Device under Interference Produced by Secondary Users
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概要
- 論文の詳細を見る
In addition to the completed standards of ECMA-392 and IEEE 802.22-2011, some more systems that target at operating in TV white space (TVWS) are under standardization, namely include IEEE P802.11af, IEEE P802.15.4m and IEEE P1900.7. Therefore, it is foreseeable situation that heterogeneous systems will coexist in the TVWS and which makes it difficult to set universal quiet period among the systems during spectrum sensing. As a result, when spectrum sensing is used to identify TVWS, sensing under interference produced by either of above secondary users (SU) may be the true situation. In this work, experimental study of sensing under SU interference is performed using a recently developed sensing device and IEEE 802.11 of prototypes. The sensing device operates at the whole Japanese UHF TV band (470-770 MHz) and can reliably detect the presence of ISDB-T signals at FCC required level of -114 dBm in a 6MHz channel under reasonable adjacent channel interference (ACI) and Doppler frequency. The IEEE 802.11 of prototype verifies the PHY and MAC layer design of the specification of IEEE 802.11 of draft standard. During experiment, sensing performance is checked for purposely broadcasted on air ISDB-T signals under three noise condition : environment noise without SU interference, under interference produced by a single SU and under aggregate interference produced by two SUs. The test results show that for the feature detection based sensing device, the SU interference produced by IEEE 802.11 of systems may lead to unstable sensing performance when its level is significantly higher than ISDB-T; moreover, the aggregate SU interference does not necessarily lead to worse performance as compared to interference produced by a single SU.
- 一般社団法人電子情報通信学会の論文
- 2013-02-20
著者
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SONG Chunyi
Wireless Network Research Institute, National Institute of Information and Communications Technology
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Harada Hiroshi
Wireless Network Research Center National Institute of Information and Communications Technology
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ISHIZU Kentaro
Wireless Network Research Institute, National Institute of Information and Communications Technology (NICT)
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Rabarijaona Verotiana
Wireless Network Research Institute, National Institute of Information and Communications Technology (NICT)
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Kojima Fumihide
Wireless Network Research Institute, National Institute of Information and Communications Technology (NICT)
関連論文
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- Distributed sensing system for TVWS : Part 2: Performance of different cooperative sensing algorithms
- Distributed sensing system for TVWS : Part 1: System design and performance of each sensor
- Utilizing multi-location option for the coexistence among TVWS devices
- Performance of a Small Size Sensing Device under Interference Produced by Secondary Users
- A TV White Space Spectrum Sensing Device with Robust Sensing Performance and Attractive Physical Features
- Distributed sensing system for TVWS : Part 2 : Performance of different cooperative sensing algorithms
- An Enhanced Feature Detection Method for DTV Signals by Detecting Aggregation of Correlation Peaks