A study on frequency diversity using lower layer of LDM-BST-OFDM transmission scheme

Hiroto Yamamoto, Akira Nakamur, Makoto Itami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently, the next-generation DTTB(Digital Terrestrial Television Broadcasting) for UHDTV (Ultra-High Definition Television) broadcasting is being researched and developed in the world. For the Japanese next-generation DTTB for UHDTV broadcasting, LDM-BST-OFDM(Layered Division Multiplexing - Band Segmented Transmission - Orthogonal Frequency Division Multiplexing) transmission scheme is proposed. Although LDM-BST-OFDM transmission scheme can be achieved good band utilization, dedicated receivers that can demodulate LDM-multiplexed symbols are required. Therefore, frequency diversity using lower layer of LDM-BST-OFDM transmission scheme is proposed in this paper. In the proposed scheme, coded bits for fixed reception which are transmitted in 26 segments excluding the central 9 segments are duplicated. After that, duplicated bits are modulated and LDM-multiplexed in the partial reception band. In the conventional fixed receivers which cannot demodulate LDM-multiplexed symbols, the stream for fixed reception can be decoded without LDM-multiplexed symbols. On the other hand, the performance is improved by maximum ratio combining using LDM-multiplexed symbols in the proposed receivers which can demodulate LDM-multiplexed symbols. In this paper, the reception characteristics of the proposed scheme is evaluated by computer simulations. As the results of the simulations, the required CNR(Carrier to Noise Ratio) of fixed reception can be improved by the proposed scheme.

Original languageEnglish
Title of host publication2020 IEEE International Conference on Consumer Electronics, ICCE 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728151861
DOIs
Publication statusPublished - Jan 2020
Event2020 IEEE International Conference on Consumer Electronics, ICCE 2020 - Las Vegas, United States
Duration: 4 Jan 20206 Jan 2020

Publication series

NameDigest of Technical Papers - IEEE International Conference on Consumer Electronics
Volume2020-January
ISSN (Print)0747-668X

Conference

Conference2020 IEEE International Conference on Consumer Electronics, ICCE 2020
CountryUnited States
CityLas Vegas
Period4/01/206/01/20

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Yamamoto, H., Nakamur, A., & Itami, M. (2020). A study on frequency diversity using lower layer of LDM-BST-OFDM transmission scheme. In 2020 IEEE International Conference on Consumer Electronics, ICCE 2020 [9043078] (Digest of Technical Papers - IEEE International Conference on Consumer Electronics; Vol. 2020-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCE46568.2020.9043078