A 220 GHz Frequency-Division Multiplexing Wireless Link with High Data Rate

doi:10.12142/ZTECOM.202303009

ZTE Communications ›› 2023, Vol. 21 ›› Issue (3): 63-69.DOI: 10.12142/ZTECOM.202303009

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A 220 GHz Frequency-Division Multiplexing Wireless Link with High Data Rate

ZHANG Bo¹(), WANG Yihui¹, FENG Yinian¹, YANG Yonghui^2,³, PENG Lin^2,³

^1.University of Electronic Science and Technology of China, Chengdu 610054, China
^2.ZTE Corporation, Shenzhen 518057, China
^3.State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen 518055, China

Received:2023-03-15 Online:2023-09-21 Published:2023-03-22
About author:ZHANG Bo (bozhang@uestc.edu.cn) received his BE, MS, and PhD degrees in electromagnetic field and microwave technology from the University of Electronic Science and Technology of China (UESTC) in 2004, 2007, and 2011, respectively. He has been a senior member of IEEE in 2015. He is currently a professor with School of Electronic Science and Engineering, UESTC and Yangtze Delta Region Institute (Huzhou), UESTC. His research interests are terahertz solid state technology and system.|WANG Yihui received her BE degree in electronic engineering from University of Electronic Science and Technology of China (UESTC) in 2017, and is currently working toward her MS degree in terahertz solid-state circuit technology in UESTC, focusing on microwave, terahertz solid-state circuits, and terahertz communication.|FENG Yinian received his BS degree in electronic engineering from University of Electronic Science and Technology of China (UESTC) in 2016, where he is currently pursuing his PhD degree in terahertz solid-state circuit technology. His research interests include microwave, terahertz solid-state circuits, and terahertz communication.|YANG Yonghui received his BS degree in information countermeasure techniques and MS degree in electronic information engineering from Xidian University, China in 2006 and 2010, respectively. Since 2010, he has been with ZTE Corporation, where he focuses on wireless communications. His current research interests include 5G and 6G technology, millimeter-wave and terahertz communication.|PENG Lin received his BS degree in information engineering and MS degree in electromagnetic field and microwave techniques from Nanjing University of Science and Technology, China in 2004 and 2006, respectively. Since 2006, he has been with ZTE Corporation, where he focuses on the research of wireless communications. His current research interests include beyond-5G and 6G technology, millimeter-wave and terahertz communications and intelligent reflecting surface for wireless applications.
Supported by:
the National Natural Science Foundation of China(62022022);the National Key R&D Program of China(2018YFB1801502);China Postdoctoral Science Foundation(2021TQ0057);ZTE Industry-University-Institute Cooperation Funds

Abstract

Abstract:

With the development of wireless communication, the 6G mobile communication technology has received wide attention. As one of the key technologies of 6G, terahertz （THz） communication technology has the characteristics of ultra-high bandwidth, high security and low environmental noise. In this paper, a THz duplexer with a half-wavelength coupling structure and a sub-harmonic mixer operating at 216 GHz and 204 GHz are designed and measured. Based on these key devices, a 220 GHz frequency-division multiplexing communication system is proposed, with a real-time data rate of 10.4 Gbit/s for one channel and a transmission distance of 15 m. The measured constellation diagram of two receivers is clearly visible, the signal-to-noise ratio (SNR) is higher than 22 dB, and the bit error ratio (BER) is less than 10^-8. Furthermore, the high definition (HD) 4K video can also be transmitted in real time without stutter.

Key words: frequency-division multiplexing, sub-harmonic mixer, terahertz communication, terahertz duplexer

ZHANG Bo, WANG Yihui, FENG Yinian, YANG Yonghui, PENG Lin. A 220 GHz Frequency-Division Multiplexing Wireless Link with High Data Rate[J]. ZTE Communications, 2023, 21(3): 63-69.

Figures/Tables 16

Figure 1 Communication system block diagram

Figure 2 Front-end link of the communication system

Figure 3 220 GHz sub-harmonic mixer

Figure 4 Frequency conversion loss test results of mixers with different LO frequencies: (a) 204 GHz and (b) 216 GHz

Figure 5 Filter structure diagram

Figure 6 Filter simulation results

Figure 7 Physical diagram of duplexer: (a) appearance and (b) microscope photo of internal structure

Figure 8 Duplexer simulation and test data

Figure 9 Single-channel experimental block diagram

Figure 10 Single-channel experimental scene diagram

Figure 11 Single-channel test data: (a) relationship between transmit power and SNR and (b) relationship between SNR and BER

Figure 12 Constellation diagrams with different signal-to-noise ratio SNR: (a) 17.79 dB, (b) 19.85 dB, and (c) 22.62 dB

Figure 13 Variation of SNR with different frequency bias

Table 1 Experimental prototype performance comparison of terahertz (THz) wireless communication systems

Reference	Frequency/ GHz	Transmission Rate/(Gbit/s)	Modulation Format	Transmission Distance/m	Real-Time Transmission
Ref. [2]	120	10	ASK	1	No
Ref. [3]	290	120	16QAM	9.8	No
Ref. [5]	220–225	110	QPSK	1	No
Our proposed work	220	10.4	16QAM	15	Yes
Our proposed work	204/216	10.4/10.4	16QAM	15	Yes

Figure 14 (a) Uplink transmit and downlink receive; (b) downlink transmit and uplink receive

Figure 15 Constellation diagram: (a) 204 GHz uplink; (b) 216 GHz downlink

References 13

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A 220 GHz Frequency-Division Multiplexing Wireless Link with High Data Rate

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