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학술지 Scattered Pilot Performance and Optimization for ATSC 3.0
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저자
Eduardo Garro, Jordi Joan Gimenez, 박성익, Jordi Joan Gimenez
발행일
201703
출처
IEEE Transactions on Broadcasting, v.63 no.1, pp.282-292
ISSN
0018-9316
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TBC.2016.2630304
협약과제
16MR2400, (통합)융합형 실감방송 서비스 및 전송 기술 개발, 허남호
초록
The next-generation U.S. digital terrestrial television (DTT) standard ATSC 3.0 is the most flexible DTT standard ever developed, outperforming the state-of-the-art digital video broadcasting-terrestrial 2nd generation (DVB-T2) standard. This higher flexibility allows broadcasters to select the configuration that better suits the coverage and capacity requirements per service. Regarding the selection of pilot patterns, whereas DVB-T2 provides eight different patterns with a unique pilot amplitude, ATSC 3.0 expands up to 16, with five different amplitudes per pattern. This paper focuses on the pilot pattern and amplitude performance and optimization for time and power multiplexing modes, time division multiplexing and layered division multiplexing (LDM), respectively, of ATSC 3.0. The selection of the optimum pilot configuration is not straightforward. On the one hand, the pilots must be sufficiently dense to follow channel fluctuations. On the other hand, as long as pilot density is increased, more data overhead is introduced. Moreover, this selection is particularly essential in LDM mode, because the LDM implementation in ATSC 3.0 requires that both layers share all the waveform parameters, including pilot pattern configuration. In addition, there is an error proportional to the channel estimate of the top layer that affects to the lower layer performance.
키워드
ATSC 3.0, channel estimation, layered division multiplexing (LDM), pilot pattern, terrestrial broadcasting
KSP 제안 키워드
ATSC 3.0, Channel estimation(CE), DVB-T2, Digital Terrestrial Television, Next-generation, Pilot Performance, Terrestrial Broadcasting, Time division multiplexing, Top layer, data overhead, digital video broadcasting-terrestrial(DVB-T)