Xiaohu You, Cheng‐Xiang Wang, Jie Huang, Xiqi Gao et al.
Abstract The fifth generation (5G) wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized, such as mass connectivity, ultra-reliability, and guaranteed low latency. However, 5G will not meet all requirements of the future...
Xin Ge Zhang, Ya Lun Sun, Bingcheng Zhu, Wei Jiang et al.
Signal conversion plays an important role in many applications such as communication, sensing, and imaging. Realizing signal conversion between optical and microwave frequencies is a crucial step to construct hybrid communication systems that combine both optical and microwave wireless technologies ...
Yue Wu, Ji Chen, Yin Wang, Zhongyi Yuan et al.
Abstract Optical wireless communication (OWC) stands out as one of the most promising technologies in the sixth-generation (6G) mobile networks. The establishment of high-quality optical links between transmitters and receivers plays a crucial role in OWC performances. Here, by a compact beam splitt...
Xin Ge Zhang, Ya Lun Sun, Bingcheng Zhu, Wei Jiang et al.
Programmable metasurfaces enable real-time control of electromagnetic waves in a digital coding manner, which are suitable for implementing time-domain metasurfaces with strong harmonic manipulation capabilities. However, the time-domain metasurfaces are usually realized by adopting the wired electr...
Yaping Zhang, Zhizhen Wu, Chunguo Li, Zaichen Zhang et al.
For massive multiple-input multiple-output (MIMO) systems, signal detection is always a key concern. Traditional detection methods such as minimum mean square error (MMSE) all suffer from a variety of problems in respect of complexity and performance when applied to large-scale MIMO systems. In this...
Fan‐Xu Meng, Ze‐Tong Li, Xutao Yu, Zaichen Zhang
The advent of Noisy Intermediate-Scale Quantum (NISQ) devices provides crucial promise for the development of quantum algorithms. Variational quantum algorithms have emerged as one of the best hopes to utilize NISQ devices. Among these is the famous Variational Quantum Eigensolver (VQE), where one t...
Ningyuan Yang, Shusen Jing, Anlan Yu, Xiao Liang et al.
With low-density parity-check (LDPC) code and polar code selected as the standard codes for 5G eMBB scenario, one challenge is how to improve the hardware efficiency when both decoders are required by one system. Since LDPC and polar codes can be decoded with belief propagation (BP) algorithms, this...
Xin Ge Zhang, Ya Lun Sun, Bingcheng Zhu, Han Wei Tian et al.
Microwave-optical interaction and its effective utilization are vital technologies at the frontier of classical and quantum sciences for communication, sensing, and imaging. Typically, state-of-the-art microwave-to-optical converters are realized by fiber and circuit approaches with multiple process...
Xiaosi Tan, Zhiwei Zhong, Zaichen Zhang, Xiaohu You et al.
The channel hardening-exploiting message passing detection (MPD) algorithm achieves good performance in large-scale multiple-input multiple-output (MIMO) systems. However, for not-so-large systems with larger loading factors, the MPD suffers slow convergence rate and higher complexity. In this paper...
Muyang Li, Yue Wu, Haobai Li, Ziwen Zhou et al.
Due to signal shielding caused by building structures, conventional mature positioning technologies such as the Global Positioning System (GPS) are only suitable for outdoor navigation and detection. However, there are many scenarios that urgently require high-precision indoor positioning technologi...
Huizheng Wang, Zaichen Zhang, Xiaohu You, Chuan Zhang
Deep convolution neural networks (CNNs) usually require a large number of iterative convolution operations, which would consume significant amounts of hardware resources. In this paper, we propose an efficient convolution architecture based on Winograd algorithm for convolutional neural networks (CN...
Chao Yang, Weihong Xu, Zaichen Zhang, Xiaohu You et al.
Sparse-code multiple-access (SCMA) is an effective non-orthogonal multiple-access (NOMA) technique. Existing detectors such as deterministic message passing algorithm (DMPA) are one-dimensional and require precise channel estimation. This paper proposes a blind detector from a two-dimensional perspe...
Chuan Zhang, Zhizhen Wu, Christoph Studer, Zaichen Zhang et al.
For massive multiple-input multiple-output (MIMO) systems, linear minimum mean-square error (MMSE) detection has been shown to achieve near-optimal performance but suffers from excessively high complexity due to the large-scale matrix inversion. Being matrix inversion free, detection algorithms base...
Zhentian Zhang, Jian Dang, Zaichen Zhang, Liang Wu et al.
Massive machine-type communications (mMTC) or massive access is a critical scenario in the fifth generation (5G) and the future cellular network. With the surging density of devices from millions to billions, unique pilot allocation becomes inapplicable in the user ID-incorporated grant-free random ...
Yaping Zhang, Anlan Yu, Xiaosi Tan, Zaichen Zhang et al.
For massive multiple-input multiple-output (MIMO) detection, minimum mean square error (MMSE) method can achieve close-to-optimal performance. However, its computational complexity is proportional to the third power of antenna elements due to the inevitable matrix inversion operation. Especially whe...