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http://dx.doi.org/10.5909/JEB.2011.16.3.490

Securing Method for Available Frequency by Changing Adaptive Protection Ratio in Adjacent Station Interference Environment of FM Broadcast  

Kim, Gi-Young (Dept. of Electronic Engineering, Chungbuk National University)
Ryu, Heung-Gyoon (Dept. of Electronic Engineering, Chungbuk National University)
Publication Information
Journal of Broadcast Engineering / v.16, no.3, 2011 , pp. 490-500 More about this Journal
Abstract
The channels of domestic FM broadcast are needed to provide various kinds of new broadcasting services. However, available channels are limited and saturated. The channel interval of FM broadcast is changed from 200 kHz to 100 kHz to maximize utilization efficiency of scarce broadcast spectrum at all over the world. Also, there are many researches such as IBOC(In Band On Channel) and DRM+(Digital Radio Mondial+) that is to allocate the digital signal beside analog bandwidth. But output power is decrease to avoid interference between adjacent radio stations. In this paper, we analyzes the problems of the protection ratio which is decided in 1986 and we propose method to improve about 7~10dB significantly the protection ratio according to the recent DSP(Digital Signal Processing) techniques without loss of both transmission power and broadcast quality. In addition, we examined the possibility of securing two times available channels by reducing minimum frequency interval from 800 kHz to 400 kHz or 600 kHz in the equal site.
Keywords
Adaptive protection ratio; Available frequency; FM broadcast; Secure; Minimum frequency interval;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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