상세정보
학술대회
Capacity Analysis of LDM-Based DTV System with Flexible MIMO Configuration
- 저자
- Liang Zhang, Zhihong Hong, Wei Li, Yiyan Wu, Khalil Salehian, David Gomez-Barquero, Pablo Angueira, Jon Montalban, 김흥묵, 박성익, 이재영
- 발행일
- 201606
- 출처
- International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2016, pp.1-7
- 협약과제
- 16MR2400, (통합)융합형 실감방송 서비스 및 전송 기술 개발, 허남호
- 초록
- Layered-Division-Multiplexing (LDM) is a physical-layer non-orthogonal multiplexing (NOM) technology that can efficiently deliver multiple digital TV services with different requirements on throughput and robustness. In literature, channel capacity analysis has been conducted to prove the fundamental advantage of LDM over T/FDM systems when delivering mixed services with different SNR thresholds. Previous analysis only considers wireless systems with single-antenna at both transmitters and receivers. Multiple-input-multiple-output (MIMO) technologies are the key technologies in modern wireless systems to achieve higher spectrum efficiency. As a multiple-layer transmission system, LDM offers an additional freedom to deploy different MIMO technologies in the different signal layers, which results in different channel capacity distribution among the multiple layers. In this paper, we conduct capacity analysis on the achievable transmission capacities in a two-layer LDM system with flexible MIMO configurations, and the capacity distribution among the multiple layers. The analysis will provide insights into the optimization of various MIMO configurations for different application scenarios. Finally, we show that different MIMO technologies can be flexibly incorporated in an LDM system with minimal additional complexity.
- KSP 제안 키워드
- Application scenarios, Capacity distribution, Channel capacity analysis, Key technology, Multiple input multiple output(MIMO), Non-orthogonal multiplexing, Physical Layer, Spectrum efficiency, Transmission system, digital TV, layered division multiplexing