그림 1. 진폭 변조 압축 특성 Fig. 1. Amplitude Modulation Companding (AMC) compression function
그림 2. DCS 변조 압축 특성 예 : 반송파 압축 특성 Fig. 2. DCS Companding Example – carrier compression function
표 1. AM 송신소 현황 및 전력 요금 산정 결과 Table 1. AM transmission site and Electricity Payment Calculation Result
표 2. AM 고효율 전송방식을 적용할 경우 전력 요금 예측 결과 (AMC, -3 dB 컴팬딩, 70% 변조도) Table 2. Electricity Payment Prediction when the AM high-efficiency transmission method is applied (AMC, -3 dB companding, 70% modulation)
표 3. AM 고효율 전송방식을 적용할 경우 전력 요금 예측 결과 (AMC, -6 dB 컴팬딩, 70%변조도) Table 3. Electricity Payment Prediction when the AM high-efficiency transmission method is applied (AMC, -6 dB companding, 70% modulation)
참고문헌
- Lee Jong-gwan, A study on Improving the use of AM radio and standard FM radio broadcasting frequencies, Korea Communications Commission, 2010. 8
- Kim Ji-soo, Kang Hyun-jung, Kwon Hyuk-joon, A study on Improvement measure of Effectiveness and Public of Terrestrial Radio Broadcast Frequency, Korea Communications Commission, 2018. 12
- SangWoon Lee, A study on needs to introduce AM radio broadcasting high-efficiency transmission system, 2019 Korean Institute of Broadcast and Media Engineers Conference Proceedings, 2019, 6. 19
- Media Today, "Broadcasting to North Korea arbitrarily lowered "KBS legal response to shipbuilding and TV shipbuilding", 2018.10.11
- SangWoon Lee, AM High Efficiency Modulation Broadcasting Technology and Service Trends, KOBA Conference, 2019.5.24.
- Korea Electric Power Corporation Electricity Rate Standard, 2019
- NRSC, AM Modulation-Dependent Carrier Level (MDCL) Usage Guideline, April 2013
- Ranulph Poole (BBC R&D)/Phil Kesby (Arqiva), AM Companding: Reducing the Power Consumption of LF and MF Transmitters, July 2018