| Paper Abstract and Keywords |
| Presentation |
2026-06-05 15:15
[Memorial Lecture]
A Study on Preamble Signal for Enhancement of Synchronization Performance of TDD-based FPU
Fumito Ito (NHK) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
NHK Science & Technology Research Laboratories have been researching on improving Field Pick-up Units (FPUs), which are wireless transmission systems for broadcasting. We have introduced bidirectional transmission using Time Division Duplex (TDD) to the conventional unidirectional FPU, contributing to the standardization of ARIB STD-B75. Furthermore, we are developing a compact TDD-based FPU using polarization MIMO (Multiple-Input Multiple-Output), aiming for installation on drones. On the other hand, in TDD systems, uplink and downlink subframes are transmitted alternately. Therefore, the start of each subframe must be detected with high accuracy. ARIB STD-B75 enables subframe beginning detection by inserting a synchronization preamble signal at the beginning of each subframe and detecting the correlation peak at the receiver. However, because a preamble signal is divided into two parts in the frequency domain to obtain orthogonality between the two transmit signals, there is a drawback of reduced signal power. To address this issue, this presentation will describe a proposed preamble signal that multiplexes Zadoff-Chu (ZC) sequences in the frequency domain, which can suppress cross-correlation between different sequences. We will also present computer simulation results showing that the proposed method can detect higher correlation peaks than conventional methods. Furthermore, we will touch upon experiments using a prototype compact TDD-based FPU and discuss future prospects. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
FPU / TDD / Frame Synchronization / Preamble / Zadoff-Chu Sequence / / / |
| Reference Info. |
ITE Tech. Rep., vol. 50, no. 16, BCT2026-37, pp. 17-17, June 2026. |
| Paper # |
BCT2026-37 |
| Date of Issue |
2026-05-29 (BCT) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
|
| Conference Information |
| Committee |
BCT IEEE-BT |
| Conference Date |
2026-06-05 - 2026-06-05 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
TX |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Broadcast Operating, Transmission & Reception, Program creation, Broadcast master control , etc |
| Paper Information |
| Registration To |
BCT |
| Conference Code |
2026-06-BCT-BT |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
A Study on Preamble Signal for Enhancement of Synchronization Performance of TDD-based FPU |
| Sub Title (in English) |
|
| Keyword(1) |
FPU |
| Keyword(2) |
TDD |
| Keyword(3) |
Frame Synchronization |
| Keyword(4) |
Preamble |
| Keyword(5) |
Zadoff-Chu Sequence |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Fumito Ito |
| 1st Author's Affiliation |
NHK Science & Technology Research Laboratories (NHK) |
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| Speaker |
Author-1 |
| Date Time |
2026-06-05 15:15:00 |
| Presentation Time |
30 minutes |
| Registration for |
BCT |
| Paper # |
BCT2026-37 |
| Volume (vol) |
vol.50 |
| Number (no) |
no.16 |
| Page |
p.17 |
| #Pages |
1 |
| Date of Issue |
2026-05-29 (BCT) |