Zobrazeno 1 - 10
of 445
pro vyhledávání: '"Demir, Özlem"'
Accurate estimation of the cascaded channel from a user equipment (UE) to a base station (BS) via each reconfigurable intelligent surface (RIS) element is critical to realizing the full potential of the RIS's ability to control the overall channel. T
Externí odkaz:
http://arxiv.org/abs/2411.04753
Integrated sensing and communications (ISAC) allows networks to perform sensing alongside data transmission. While most ISAC studies focus on single-target, multi-user scenarios, multi-target sensing is scarcely researched. This letter examines the m
Externí odkaz:
http://arxiv.org/abs/2410.22532
Autor:
Demir, Özlem Tuğfe, Björnson, Emil
The reconfigurable intelligent surface (RIS) technology emerges as a highly useful component of the rapidly evolving integrated sensing and communications paradigm, primarily owing to its remarkable signal-to-noise ratio enhancement capabilities. In
Externí odkaz:
http://arxiv.org/abs/2410.06855
Autor:
Demir, Özlem Tuğfe, Björnson, Emil
A large-scale MIMO (multiple-input multiple-output) system offers significant advantages in wireless communication, including potential spatial multiplexing and beamforming capabilities. However, channel estimation becomes challenging with multiple a
Externí odkaz:
http://arxiv.org/abs/2410.06843
Autor:
Demir, Özlem Tuğfe, Björnson, Emil
Cell-free massive MIMO (multiple-input multiple-output) is a promising network architecture for beyond 5G systems, which can particularly offer more uniform data rates across the coverage area. Recent works have shown how reconfigurable intelligent s
Externí odkaz:
http://arxiv.org/abs/2409.15765
In this paper, we examine the energy efficiency (EE) of a base station (BS) with multiple antennas. We use a state-of-the-art power consumption model, taking into account the passive and active parts of the transceiver circuitry, including the effect
Externí odkaz:
http://arxiv.org/abs/2409.03436
Autor:
Elbir, Ahmet M., Demir, Özlem Tuğfe, Mishra, Kumar Vijay, Chatzinotas, Symeon, Haardt, Martin
After nearly a century of specialized applications in optics, remote sensing, and acoustics, the near-field (NF) electromagnetic propagation zone is experiencing a resurgence in research interest. This renewed attention is fueled by the emergence of
Externí odkaz:
http://arxiv.org/abs/2408.11434
In the design of a metasurface-assisted system for indoor environments, it is essential to take into account not only the performance gains and coverage extension provided by the metasurface but also the operating costs brought by its reconfigurabili
Externí odkaz:
http://arxiv.org/abs/2407.15729
As wireless technology begins to utilize physically larger arrays and/or higher frequencies, the transmitter and receiver will reside in each other's radiative near field. This fact gives rise to unusual propagation phenomena such as spherical wavefr
Externí odkaz:
http://arxiv.org/abs/2407.07448
The upper mid-band frequencies (i.e., 7-24,GHz) are regarded as the golden bands for the sixth-generation (6G) wireless communication systems, combining good coverage, much new spectrum, and many antennas in compact form factors. The first 6G network
Externí odkaz:
http://arxiv.org/abs/2407.05754