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CLC number: TN926

On-line Access: 2024-01-26

Received: 2023-02-28

Revision Accepted: 2024-01-26

Crosschecked: 2023-08-20

Cited: 0

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Citations:  Bibtex RefMan EndNote GB/T7714


Miaoran PENG


Lixia XIAO


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Frontiers of Information Technology & Electronic Engineering  2023 Vol.24 No.12 P.1752-1762


Digital-to-analog converter free architecture for digital reconfigurable intelligent surface

Author(s):  Miaoran PENG, Jinhao KAN, Lixia XIAO, Guanghua LIU, Tao JIANG

Affiliation(s):  Research Center of 6G Mobile Communications, Huazhong University of Science and Technology, Wuhan 430074, China; more

Corresponding email(s):   pengmiaoran@hust.edu.cn, lixiaxiao@hust.edu.cn

Key Words:  Reconfigurable intelligent surface, Hardware implementation, High-order modulation

Miaoran PENG, Jinhao KAN, Lixia XIAO, Guanghua LIU, Tao JIANG. Digital-to-analog converter free architecture for digital reconfigurable intelligent surface[J]. Frontiers of Information Technology & Electronic Engineering, 2023, 24(12): 1752-1762.

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publisher="Zhejiang University Press & Springer",

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%T Digital-to-analog converter free architecture for digital reconfigurable intelligent surface
%A Miaoran PENG
%A Jinhao KAN
%A Lixia XIAO
%A Guanghua LIU
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T1 - Digital-to-analog converter free architecture for digital reconfigurable intelligent surface
A1 - Miaoran PENG
A1 - Jinhao KAN
A1 - Lixia XIAO
A1 - Guanghua LIU
A1 - Tao JIANG
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 24
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SP - 1752
EP - 1762
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/FITEE.2300133

This research investigates the digital-to-analog converter (DAC) free architecture for the digital reconfigurable intelligent surface (RIS) system, where the transmission lines are implemented for reflection coefficient (RC) control to reduce power consumption. In the proposed architecture, the radio frequency (RF) switch based phase shifter is considered. By using a single-pole four-throw (SP4T) switch to simultaneously control the RCs of a group of elements, a 2-bit phase shifter is realized for passive beam steering. A novel modulation scheme is developed to explore the cost effectiveness, which approaches the performance of traditional quadrature amplitude modulation (QAM). Specifically, to overcome the limitation of the phase shift bits, joint frequency-shift and phase-rotation operations are applied to the constellation points. The simulation and experimental results demonstrate that the proposed architecture is capable of providing an ideal transmission performance. Moreover, 64- and 256-QAM modulation schemes could be implemented by expanding the elements and phase bits.




Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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