Proceedings of the Korea Electromagnetic Engineering Society Conference (한국전자파학회:학술대회논문집)
- 2005.11a
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- Pages.125-130
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- 2005
A Study on Calculation of Protection Ratio for Frequency Coordination in Microwave Relay System Networks
M/W 중계 시스템 망의 주파수 조정을 위한 보호비 계산에 대한 연구
- Suh, Kyoung-Whoan (School of Electronics Engineering, Kangnam University) ;
- Lee, Joo-Hwan (Radio Technology Group, ETRI)
- Published : 2005.11.05
Abstract
This paper suggests an efficient method of protection ratio calculation and shows some calculated results applicable to frequency coordination in microwave relay system networks, and the net filter discrimination (NFD) associated with Tx spectrum mask and overall Rx filter characteristics has been examined to obtain the adjacent channel protection ratio. The protection ratio comprises several factors such as C/N of modulation scheme, noise-to-interference ratio, multiple interference allowance, fade margins of multi-path and rain attenuation, and NFD. According to computed results for 6.7 GHz, 64-QAM, and 60 km at BER
Keywords
- Microwave relay system;
- protection ratio;
- fade margin;
- net filter discrimination;
- carrier-to-interference ratio