کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6889448 | 697689 | 2016 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cooperative spectrum sensing protocols and evaluation with IEEE 802.15.4 devices
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Cooperative spectrum sensing protocols and evaluation with IEEE 802.15.4 devices Cooperative spectrum sensing protocols and evaluation with IEEE 802.15.4 devices](/preview/png/6889448.png)
چکیده انگلیسی
Spectrum Sensing is one of the important tasks for wireless devices. By sensing the spectrum, wireless devices sense their radio environment and perform spectrum access accordingly to reduce collisions. Due to radio propagation effects and inherent noise in the measurements, performance of todays wireless technologies with individual spectrum sensing cannot solve the hidden node problem. Cooperative sensing is seen as a way to improve the performance of wireless devices improving the radio bandwidth utilization and minimizing interference among wireless devices. To the best of our knowledge, this is the first work which provides protocols for cooperative sensing and presents experimental results with IEEEÂ 802.15.4 devices. We present and implement protocols and applications for primary, secondary and cooperative users with a dedicated control channel. Thereby, the secondary user receiver serves as a first cooperative node in the system which reduces collisions between primary and secondary users. We evaluate the system performance with receiver sensing and additional cooperative nodes. We also propose a mechanism to extend the protocol for multiple secondary users sharing the same control channel. Based on the evaluations, we also provide recommendations for usage of cooperative sensing with focus on IEEEÂ 802.15.4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physical Communication - Volume 19, June 2016, Pages 93-105
Journal: Physical Communication - Volume 19, June 2016, Pages 93-105
نویسندگان
Tahir Akram, Tim Esemann, Horst Hellbrück,