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학술대회 Performance Evaluation of ATSC 3.0 Mobile Service with LDM/TDM under TU-6 Channel
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안성준, 박성익, 이재영, 권선형, 임보미, 김흥묵, 허남호, Yiyan Wu, Liang Zhang, Wei Li, 김형석, 김정창
International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2018, pp.1-3
18HR2400, 지상파 UHD 송수신 환경 분석 및 망구축 기반기술 개발, 김흥묵
This paper presents performance comparison between layered division multiplexing (LDM) and time division multiplexing (TDM) based mobile services in the Advanced Television System Committee (ATSC) 3.0 standard. The comparison has been performed through extensive computer simulations, leveraging full-chain simulator entirely compliant with A/322. The simulation results demonstrate that LDM can significantly lower the signal-to-noise ratio (SNR) requirement compared to TDM in a given mobile scenario while maintaining the same (or analogous possible) data rate. For instance, LDM based mobile service is 6.1 dB more robust than TDM based service at a velocity of 100 km/h. In addition, even though LD M uses larger FFT size than TDM (16k-FFT for LDM and 8k-FFT for TDM), it is verified that LDM based mobile service is fully feasible under high speed condition.
KSP 제안 키워드
ATSC 3.0, Computer simulation(MC and MD), High Speed, Mobile services, Performance comparison, Performance evaluation, Signal noise ratio(SNR), Signal-to-Noise, TU-6, Television system, Time division multiplexing