no code implementations • 31 May 2024 • Yinxiao Zhuo, Tianqi Mao, Haojin Li, Chen Sun, Zhaocheng Wang, Zhu Han, Sheng Chen
To this end, this article investigates the key technologies for multi-beam ISAC system.
no code implementations • 30 May 2024 • Minghui Wu, Zhen Gao, Zhaocheng Wang, Dusit Niyato, George K. Karagiannidis, Sheng Chen
Specifically, we propose a deep joint semantic coding and beamforming (JSCBF) scheme for airship-based massive MIMO image transmission network in space, in which semantics from both source and channel are fused to jointly design the semantic coding and physical layer beamforming.
no code implementations • 21 May 2024 • Yiliang Sang, Ke Ma, Yang Ming, Jin Lian, Zhaocheng Wang
Firstly, a dedicated pre-processing module is designed to sort the selected ports for reserving the correlations of their corresponding coefficients.
no code implementations • 26 Apr 2024 • Zhaohui Huang, Zhaocheng Wang, Sheng Chen
To address this highly complex programming using sub-6GHz information, a novel heterogeneous graph neural network (HGNN) architecture is proposed to learn the intrinsic relationship between sub-6GHz and mmWave and design the hybrid beamformers for mmWave BSs.
no code implementations • 16 Apr 2024 • Kai Zheng, Miaowen Wen, Tianqi Mao, Lixia Xiao, Zhaocheng Wang
To improve the SE, we propose a novel AFDM channel estimation scheme by introducing the superimposed pilots in the DAFT domain.
no code implementations • 19 Mar 2024 • Haochen Wu, Liyang Lu, Zhaocheng Wang
Specifically, we formulate the dual-band near-field communication model based on the fact that high-frequency systems are likely to be deployed with lower-frequency systems.
no code implementations • 19 Mar 2024 • Liyang Lu, Ke Ma, Zhaocheng Wang
Near-field (NF) communications draw much attention in the context of extremely large-scale antenna arrays (ELAA).
no code implementations • 17 Mar 2024 • Xufeng Guo, Yuanbin Chen, Ying Wang, Zhaocheng Wang, Zhu Han
In this paper, we investigate the sparse channel estimation in holographic multiple-input multiple-output (HMIMO) systems.
no code implementations • 4 Feb 2024 • Liyang Lu, Zhaocheng Wang, Zhen Gao, Sheng Chen, H. Vincent Poor
This work explores the fundamental problem of the recoverability of a sparse tensor being reconstructed from its compressed embodiment.
no code implementations • 8 Nov 2023 • Fan Zhang, Tianqi Mao, Ruiqi Liu, Zhu Han, Sheng Chen, Zhaocheng Wang
For the communication-centric design, to maximize the achievable data rate, a fraction of REs are optimally allocated for communications according to prior knowledge of the communication channel.
no code implementations • 13 Sep 2023 • Ke Ma, Yiliang Sang, Yang Ming, Jin Lian, Chang Tian, Zhaocheng Wang
The Type-II codebook in Release 17 (R17) exploits the angular-delay-domain partial reciprocity between uplink and downlink channels to select part of angular-delay-domain ports for measuring and feeding back the downlink channel state information (CSI), where the performance of existing deep learning enhanced CSI feedback methods is limited due to the deficiency of sparse structures.
no code implementations • 14 May 2023 • Ke Ma, Yiliang Sang, Yang Ming, Jin Lian, Chang Tian, Zhaocheng Wang
In contrast to its counterpart in Release 16, the Type-II codebook in Release 17 (R17) exploits the angular-delay-domain partial reciprocity between uplink and downlink channels and selects part of angular-delay-domain ports for measuring and feeding back the downlink CSI, where the performance of the conventional deep learning methods is limited due to the deficiency of sparse structures.
no code implementations • 12 May 2023 • Fan Zhang, Tianqi Mao, Zhaocheng Wang
For an arbitrary-length ZC sequence, a feasible range of the root index is derived to satisfy the requirement of PSLR within the scope of RoI.
no code implementations • 7 Apr 2023 • Liyang Lu, Zhaocheng Wang, Sheng Chen
We consider the greedy algorithms for the joint recovery of high-dimensional sparse signals based on the block multiple measurement vector (BMMV) model in compressed sensing (CS).
no code implementations • 23 Jun 2021 • Tianqi Mao, Zhaocheng Wang
Terahertz (THz) wireless communication is envisioned as a promising technology, which is capable of providing ultra-high-rate transmission up to Terabit per second.
no code implementations • 3 Jun 2021 • Tianqi Mao, Jiaxuan Chen, Qi Wang, Chong Han, Zhaocheng Wang, George K. Karagiannidis
Finally, a data-embedded MS-QP (DE-MS-QP) waveform is constructed through time-domain extension of the MS-QP sequence, generating null frequency points on each subband for data transmission.
1 code implementation • 8 Jan 2021 • Ke Ma, Dongxuan He, Hancun Sun, Zhaocheng Wang, Sheng Chen
To tackle this problem, the second scheme adopts long-short term memory (LSTM) network for tracking the movement of users and calibrating the beam direction according to the received signals of prior beam training, in order to enhance the robustness to noise.
no code implementations • 30 Oct 2020 • Ke Ma, Dongxuan He, Hancun Sun, Zhaocheng Wang
Huge overhead of beam training poses a significant challenge to mmWave communications.
no code implementations • journal 2017 • XUDONG ZHU, Zhaocheng Wang, JIANFEI CAO
By introducing non-OMA (NOMA) into SM for DL-MU transmission, NOMA-based SM (NOMA-SM) is proposed to mitigate inter-user interference, while maintaining high spectral efficiency.