Research Article
Spatial Spectrum Holes in TV Band: A Measurement in Beijing
@INPROCEEDINGS{10.1007/978-3-319-24540-9_48, author={Sai Huang and Yajian Huang and Hao zhou and Zhiyong Feng and Yifan Zhang and Ping Zhang}, title={Spatial Spectrum Holes in TV Band: A Measurement in Beijing}, proceedings={Cognitive Radio Oriented Wireless Networks. 10th International Conference, CROWNCOM 2015, Doha, Qatar, April 21--23, 2015, Revised Selected Papers}, proceedings_a={CROWNCOM}, year={2015}, month={10}, keywords={TV white space Spectrum measurement Radio environment mapping Spatial spectrum access opportunities}, doi={10.1007/978-3-319-24540-9_48} }- Sai Huang
Yajian Huang
Hao zhou
Zhiyong Feng
Yifan Zhang
Ping Zhang
Year: 2015
Spatial Spectrum Holes in TV Band: A Measurement in Beijing
CROWNCOM
Springer
DOI: 10.1007/978-3-319-24540-9_48
Abstract
Spatial spectrum holes are areas where TV signal strength falls below a certain threshold and TV frequency can be utilized without license. In our measurement, we prove the existence of spatial spectrum holes considering shadowing and building penetration. To evaluate the influence of shadowing, two dimensional radio environment mapping (REM) is constructed for a 500 ×530 area in the downtown. According to the REM, a maximum attenuation of 30 dB can be caused by building blockage and shadowing. To measure the loss of wall penetration, a three dimensional measurement is conducted in the outer and inner area of a 12-floor building. It is found that the wall attenuation approximately follows a normal distribution with a mean of 24.31 dB. The distribution of spatial spectrum holes is then plotted indicating spatial spectrum holes are abundant especially in the outskirts of Beijing.