Zobrazeno 1 - 10
of 551
pro vyhledávání: '"Wu, Yongpeng"'
This paper investigates joint device identification, channel estimation, and symbol detection for cooperative multi-satellite-enhanced random access, where orthogonal time-frequency space modulation with the large antenna array is utilized to combat
Externí odkaz:
http://arxiv.org/abs/2408.02586
Autor:
Li, Yifan, Shu, Feng, Wei, Kang, Bai, Jiatong, Pan, Cunhua, Wu, Yongpeng, Song, Yaoliang, Wang, Jiangzhou
As a green MIMO structure, the partially-connected hybrid analog and digital (PC-HAD) structure has been widely used in the far-field (FF) scenario for it can significantly reduce the hardware cost and complexity of large-scale or extremely large-sca
Externí odkaz:
http://arxiv.org/abs/2406.09695
Though achieving marvelous progress in various scenarios, existing semantic communication frameworks mainly consider single-input single-output Gaussian channels or Rayleigh fading channels, neglecting the widely-used multiple-input multiple-output (
Externí odkaz:
http://arxiv.org/abs/2406.07389
Autor:
Li, Tianya, Wu, Yongpeng, Gao, Junyuan, Zhang, Wenjun, Xia, Xiang-Gen, Ng, Derrick Wing Kwan, Xiao, Chengshan
This paper investigates asynchronous MIMO massive unsourced random access in an orthogonal frequency division multiplexing (OFDM) system over frequency-selective fading channels, with the presence of both timing and carrier frequency offsets (TO and
Externí odkaz:
http://arxiv.org/abs/2405.11883
In this work, we propose the integration of GLDPC codes with short polar-like component codes, termed GLDPC codes with polar component codes (GLDPC-PC). This approach leverages the good distance properties of polar-like codes and mitigates their high
Externí odkaz:
http://arxiv.org/abs/2404.14832
The sixth generation (6G) wireless communication system will improve the key technical indicators by one to two orders of magnitude, and come with some new features. As a crucial technique to enhance the reliability and efficiency of data transmissio
Externí odkaz:
http://arxiv.org/abs/2404.14828
This letter investigates the weighted sum rate maximization problem in movable antenna (MA)-enhanced systems. To reduce the computational complexity, we transform it into a more tractable weighted minimum mean square error (WMMSE) problem well-suited
Externí odkaz:
http://arxiv.org/abs/2404.09734
This paper explores the fundamental limits of unsourced random access (URA) with a random and unknown number ${\rm{K}}_a$ of active users in MIMO quasi-static Rayleigh fading channels. First, we derive an upper bound on the probability of incorrectly
Externí odkaz:
http://arxiv.org/abs/2404.09198
This paper investigates the unsourced random access (URA) problem with a massive multiple-input multiple-output receiver that serves wireless devices in the near-field of radiation. We employ an uncoupled transmission protocol without appending redun
Externí odkaz:
http://arxiv.org/abs/2401.14008
With the aim of boosting the security of the conventional directional modulation (DM) network, a secure DM network assisted by intelligent reflecting surface (IRS) is investigated in this paper. To maximize the secrecy rate (SR), we jointly optimize
Externí odkaz:
http://arxiv.org/abs/2312.15504