Open AccessMinimum separation distance of adjacent channel TV band devices from DTV protected contour in TV white space
Author(s) -
Kang KyuMin
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.3763
Subject(s) - digital television , channel (broadcasting) , transmitter , attenuation , white spaces , separation (statistics) , electrical engineering , computer science , telecommunications , electronic engineering , wireless , engineering , physics , optics , cognitive radio , machine learning
The minimum separation distance of a TV band device (TVBD), operating on channels immediately adjacent to an active digital TV (DTV) channel, from the DTV protected contour is presented. The required keep‐out distances for personal/portable and fixed TVBDs are investigated by considering the expected overall propagation attenuation of adjacent channel TVBD signals from the TVBD transmitter to the DTV receiver. The adjacent channel keep‐out distances of TVBDs recently announced by the Federal Communications Commission (FCC) are set too long when compared with the case where the keep‐out distances are estimated with the free‐space path loss model with an additional margin. Adequate adjacent channel keep‐out distances are proposed for both personal/portable TVBDs and fixed TVBDs.