Computational Analysis for Digital TV Protection from Cognitive Radio

Young-Keun YOON  Ik-Guen CHOI  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.3   pp.980-983
Publication Date: 2008/03/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.3.980
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Broadcast Systems
digital,  TV,  interference,  frequency,  cooperation,  

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Digital TV (DTV) protection from the potential interference caused to a communication system using the cognitive radio (CR) technologies is so important for the frequency sharing between a DTV station and a communication system. In this letter, two results of the interference analysis at the co-channel bandwidth of 6 MHz are provided. One is the requirement of the protection ratio (PR) to a DTV station, which means the received signal strength of a DTV station to the interfering signal strength of a communication system ratio. The other shows the interference effect to the service area of a DTV station, when the transmit power of a communication system is either 100 W or 4 W, and the PR of a DTV station is 15 dB. Their results describe that an interferer's transmit power should be limited, because of protecting DTV station and sharing co-channel frequencies.