Dual-channel near-field holographic MIMO communications based on programmable digital coding metasurface and electromagnetic theory by Rui Wen Shao, Jun Wei Wu, Jiachen Li, Shengguo Meng, Yifan Xu, Zheng Xing Wang, Wankai Tang, Qiang Cheng, Shi Jin, Tie Jun Cui

“…The measured results of constellations show that the prototype can realize dual-channel signal transmissions under quadrature-phase shift keying scheme. The proposed paradigm features low complexity, low cost and low power consumption, and may become a valuable technique in beyond fifth generation and 6G wireless communications.…”
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W-Band Vector Millimeter Wave Signal Generation Based on Intensity Modulators Without DAC by Yitong Li, Jianguo Yu, Naibo Zhang, Kun Deng, Guangyao Yang, Ruiliang Song

“…We proposed and experimentally demonstrated a novel method to generate an adaptive <italic>N</italic>²-quadrature amplitude modulation (<italic>N</italic>²-QAM) W-band vector millimeter wave (mm-wave) signal based on intensity modulators without digital to analog converter (DAC). Two N-amplitude shift keying (N-ASK) signals are synthesized into <italic>N</italic>²-QAM W-band mm-wave vector signals by employing two Mach-Zehnder modulators, paralleling phase shifters, attenuators and a single optical mixer. …”
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<italic>M</italic>-ary overmodulation based on cyclic shift symbols for pilot-free short packet communication scheme by XIU Menglei, DOU Gaoqi, WANG Hao

“…The scheme adopted cycle code shift keying (CCSK) to modulate pseudo noise (PN) sequences, and used <italic>M</italic>-ary overmodulation sequences to perform secondary modulation on multiple CCSK symbols. …”
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Recent Advances in Graphene-Assisted Nonlinear Optical Signal Processing by Jian Wang, Xiao Hu

“…In this review article, we give a brief overview of our recent progress in graphene-assisted nonlinear optical device and their applications, including degenerate FWM based wavelength conversion of quadrature phase-shift keying (QPSK) signal, phase conjugated wavelength conversion by degenerate FWM and transparent wavelength conversion by nondegenerate FWM, two-input and three-input high-base optical computing, and high-speed gate-tunable terahertz coherent perfect absorption (CPA) using a split-ring graphene.…”
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Software-Defined Radio-Based IEEE 802.15.4 SUN FSK Evaluation Platform for Highly Mobile Environments by Jaeseok Lim, Keito Nakura, Shota Mori, Hiroshi Harada

“…IEEE 802.15.4 smart utility network (SUN) frequency-shift keying (FSK) has attracted considerable attention as a wireless communication standard designed for use in essential applications required by Internet of Things (IoT) systems. …”
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Amplitude Modulation Depth Coding Method for SSVEP-Based Brain&#x2013;Computer Interfaces by Ruxue Li, Zhenyu Wang, Xi Zhao, Guiying Xu, Honglin Hu, Ting Zhou, Tianheng Xu

“…To address these issues, we proposed a novel amplitude modulation depth coding (AMDC) method that employs Amplitude Shift Keying (ASK) technique to modulate the luminance level of stimuli dynamically. …”
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An OSNR Monitoring Scheme based on Mean and Variance Value of Signal Amplitude by CHEN Fang, LI Zifan, ZHU Yanyuan, LI Bozhong, LONG Han, WU Jianjun, DUAN Mingxiong

“…【Results】This monitoring scheme is used to experimentally monitor the receiver OSNR of Quadrature Phase Shift Keying (QPSK) /16 Quadrature Amplitude Modulation (QAM) /32QAM transmission systems with three different modulation formats. …”
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