상세정보
학술지
Layered Division Multiplexing With Distributed Multiple-Input Single-Output Schemes
- 발행일
- 201903
- 출처
- IEEE Transactions on Broadcasting, v.65 no.1, pp.30-39
- ISSN
- 0018-9316
- 출판사
- IEEE
- 협약과제
- 18HR2200, 초고품질 UHD (UHQ) 전송 기술 개발, 허남호
- 초록
- Single frequency networks (SFNs) provides an increased spectral efficiency compared to the traditional multiple frequency networks. However, some coverage areas in SFN can be affected by destructive interferences. In order to reduce these situations, distributed multiple-input single-output (MISO) schemes have been adopted in the new digital terrestrial television standards, Alamouti in DVB-T2 and transmit diversity code filter sets in ATSC 3.0. On the other hand, layered division multiplexing (LDM), a non-orthogonal multiple access technology, has been adopted in ATSC 3.0 due to its spectral efficiency increase compared to time or frequency division multiplexing. The LDM signal is formed by a power superposition of two independent signals, which are designed for different reception conditions (mobile and fixed-rooftop). The combination of distributed MISO and LDM techniques has not been evaluated yet. In this paper, the joint transmission of LDM with distributed MISO is analyzed in terms of complexity and the joint performance is evaluated by means of physical layer simulations.
- KSP 제안 키워드
- ATSC 3.0, Access technology, DVB-T2, Digital Terrestrial Television, Frequency division multiplexing, Joint Transmission, Joint performance, Multiple frequency, Multiple-input single-output(MISO), Non-orthogonal multiple access(NOMA), Physical Layer