Detecting the spectrum access opportunity (OP) of a secondary user is a key technique in cognitive radio (CR) networks. Especially in a CR scenario where dedicated spectrum sensors are installed to check the spectrum utilization, the OP at locations where the sensor is not installed cannot be estimated. To cope with the issue, this paper proposes an OP map, in which a centralized server estimates the OP of secondary users based on the interference measurements of sensors. The OP is estimated by analyzing the spatial correlation of interference. The accuracy of OP detection is validated through the MATLAB simulations in conjunction with testbed experiments using universal software radio peripherals (USRPs) in Yonsei university, Seoul, South Korea.
|Title of host publication||2017 23rd Asia-Pacific Conference on Communications|
|Subtitle of host publication||Bridging the Metropolitan and the Remote, APCC 2017|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||5|
|Publication status||Published - 2018 Feb 27|
|Event||23rd Asia-Pacific Conference on Communications, APCC 2017 - Perth, Australia|
Duration: 2017 Dec 11 → 2017 Dec 13
|Name||2017 23rd Asia-Pacific Conference on Communications: Bridging the Metropolitan and the Remote, APCC 2017|
|Other||23rd Asia-Pacific Conference on Communications, APCC 2017|
|Period||17/12/11 → 17/12/13|
Bibliographical noteFunding Information:
ACKNOWLEDGEMENT This work was partly supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No.2015-0-00294, Spectrum Sensing and Future Radio Communication Platforms) and IITP grant funded by the Korea government (MSIT) (2016-0-00208, High Accurate Positioning Enabled MIMO Transmission and Network Technologies for Next 5G-V2X (vehicle-to-everything) Services).
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Signal Processing