Zobrazeno 1 - 10
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pro vyhledávání: '"Xia A-Gen"'
In this letter, we propose to employ movable antenna (MA) to enhance covert communications with noise uncertainty, where the confidential data is transmitted from an MA-aided access point (AP) to multiple users with a warden attempting to detect the
Externí odkaz:
http://arxiv.org/abs/2410.09436
Movable antenna (MA) is an emerging technology that can significantly improve communication performance via the continuous adjustment of the antenna positions. To unleash the potential of MAs in wideband communication systems, acquiring accurate chan
Externí odkaz:
http://arxiv.org/abs/2409.19346
We propose a group information geometry approach (GIGA) for ultra-massive multiple-input multiple-output (MIMO) signal detection. The signal detection task is framed as computing the approximate marginals of the a posteriori distribution of the trans
Externí odkaz:
http://arxiv.org/abs/2409.02616
Hyperspectral object tracking (HOT) has exhibited potential in various applications, particularly in scenes where objects are camouflaged. Existing trackers can effectively retrieve objects via band regrouping because of the bias in existing HOT data
Externí odkaz:
http://arxiv.org/abs/2408.12232
The plane wave based wireless communications have becoming more and more matured, along with the well utilization of the traditional resources such as time and frequency. To further increase the capacity for rapidly increasing capacity demand of wire
Externí odkaz:
http://arxiv.org/abs/2408.06588
Due to high bandwidth and small antenna size, millimeter-wave (mmWave) integrated line-of-sight (LOS) multiple-input-multiple-output (MIMO) systems have attracted much attention. Reconfigurable intelligent surfaces (RISs), which have the potential to
Externí odkaz:
http://arxiv.org/abs/2408.06584
Autor:
Xia, Xiang-Gen, Wang, Wei
Vector OFDM (VOFDM) is equivalent to OTFS and is good for time-varying channels. However, due to its vector form, its signal spectrum is not as clear as that of the conventional OFDM. In this paper, we study the discrete spectrum of discrete VOFDM si
Externí odkaz:
http://arxiv.org/abs/2407.19503
Publikováno v:
IEEE Transactions on Wireless Communications, vol. 23, no. 10, pp. 15421-15434, Oct. 2024
With antenna spacing much less than half a wavelength in confined space, holographic multiple-input multiple-output (HMIMO) technology presents a promising frontier in next-generation mobile communication. We delve into the research of the multi-user
Externí odkaz:
http://arxiv.org/abs/2407.10848
Autor:
Xia, Xiang-Gen
In this note, a result of a previous paper on the Clark conjecture on time-warped bandlimited signals is extended to a more general class of the time warping functions, which includes most of the common functions in practice.
Externí odkaz:
http://arxiv.org/abs/2407.01083
Channel knowledge map (CKM) has received widespread attention as an emerging enabling technology for environment-aware wireless communications. It involves the construction of databases containing location-specific channel knowledge, which are then l
Externí odkaz:
http://arxiv.org/abs/2406.09822