DTV protection regions for spectrum sharing

The Journal of Engineering

Nazmat Toyin Surajudeen-Bakinde¹  Yinusa Ademula Adediran¹  Olabanji Kolade²  Nasir Faruk³  Adeseko Aborisade Ayeni³ 

[1] Department of Electrical and Electronics Engineering, University of Ilorin, Ilorin, Nigeria;Department of Geography and Environmental Management, University of Ilorin, Ilorin, Nigeria;Department of Telecommunication Science, University of Ilorin, Ilorin, Nigeria

关键词: linear curve;    terrain profile;    TV broadcast system;    UHF broadcast frequency;    allocated spectrum reusability;    DTV protection regions;    path loss model;    spectrum sharing;    frequency profile;    noise limited contour;    field strength measurement;    VHF broadcast frequency;    protection margin;    model prediction;    spectrum availability;    secondary user;    contour prediction;    decision making;   

DOI  :  10.1049/joe.2014.0192

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

In this Letter, the authors propose a technique that allows a secondary user (SU) to reuse the spectrum allocated to TV broadcast system. The approach is based on protection view point and an SU is allowed to transmit outside the noise limited contour (grade B contour) with additional protection margin. An algorithm was developed that predicts the grade B contour and makes a decision on the availability of the spectrum. The keep-out distance was obtained using the existing path loss models and a model developed based on field strength measurements conducted in the very high frequency (VHF) and ultra high frequency (UHF) broadcast frequencies. Results of simulation indicate that the extra margin does not follow a linear curve as expected, but strongly depends on the operating frequency and terrain profile of the area. In addition, the measured model's prediction deviates significantly from the other models' prediction.

【 授权许可】

CC BY