Title :
Co-Channel and Adjacent Channel Interference and Protection Issues for DVB-T2 and IEEE 802.22 WRAN Operation
Author :
Popescu, V. ; Fadda, M. ; Murroni, M. ; Morgade, J. ; Angueira, P.
Author_Institution :
Dept. of Electron. & Comput., Transilvania Univ. of Brasov, Brasov, Romania
Abstract :
This paper presents a study on the coexistence issue of digital terrestrial TV broadcasting and cognitive broadband access operation in the TV white spaces (TVWS). Extended measurements were performed to evaluate the protection of the existing Second generation of digital video broadcasting terrestrial standard (DVB-T2) services in the presence of IEEE 802.22 WRAN co-channel and adjacent channel interference. The absence of picture failure over 30 consecutive seconds on decoded DVB-T2 streams has been monitored to obtain the maximum tolerable level of IEEE 802.22 WRAN interference, which ensures the protection of the primary broadcast system. This paper considers practical DVB-T2 system configuration options by varying parameters of the standard, such as constellation and code rate, FFT size, pilot pattern and guard interval, and rotated constellations and compares them in terms of robustness with respect to the interference generated by IEEE 802.22 WRAN operation. The goal is to provide cognitive broadband operators in the TVWS with guidelines to optimize their network by choosing the parameters that best fit their needs in case of coexistence with DVB-T2 broadcasting services.
Keywords :
adjacent channel interference; cochannel interference; digital video broadcasting; DVB-T2 services; IEEE 802.22 WRAN interference; TV white spaces; TVWS; adjacent channel interference; co-channel interference; cognitive broadband access operation; cognitive broadband operators; digital terrestrial TV broadcasting services; digital video broadcasting terrestrial standard; Digital video broadcasting; IEEE standards; Interchannel interference; Modulation; TV; IEEE 802.22 WRAN; Second generation of digital video broadcasting terrestrial standard; TV interference; coexistence;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2014.2360024