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pro vyhledávání: '"AlAmmouri, Ahmad"'
High-frequency wideband cellular communications over mmWave and sub-THz offer the opportunity for high data rates. However, it also presents high path loss, resulting in limited coverage. High-gain beamforming from the antenna array is essential to m
Externí odkaz:
http://arxiv.org/abs/2401.00819
Autor:
Ratnam, Vishnu V., Mo, Jianhua, AlAmmouri, Ahmad, Ng, Boon L., Jianzhong, Zhang, Molisch, Andreas F.
Publikováno v:
IEEE Access, vol. 10, pp. 73364-73377, 2022
Hybrid beamforming is an attractive solution to build cost-effective and energy-efficient transceivers for millimeter-wave and terahertz systems. However, conventional hybrid beamforming techniques rely on analog components that generate a frequency
Externí odkaz:
http://arxiv.org/abs/2312.11682
We study how dense multi-antenna millimeter wave (mmWave) cellular network performance scales in terms of the base station (BS) spatial density $\lambda$, by studying the signal-to-interference-plus-noise ratio (SINR) and the area spectral efficiency
Externí odkaz:
http://arxiv.org/abs/2005.10565
We study the scaling laws of the signal-to-interference-plus-noise ratio (SINR) and area spectral efficiency (ASE) in multi-antenna cellular networks, where the number of antennas scales with the base station (BS) spatial density $\lambda$. We start
Externí odkaz:
http://arxiv.org/abs/2002.04118
We study the scaling laws of the signal-to-interference-plus-noise ratio (SINR) and the area spectral efficiency (ASE) in multi-antenna cellular networks, where the number of antennas scales with the base station (BS) spatial density $\lambda$, under
Externí odkaz:
http://arxiv.org/abs/2001.05083
Publikováno v:
2020 IEEE Transactions on Wireless Communications
In cellular systems, the user equipment (UE) can request a change in the frequency band when its rate drops below a threshold on the current band. The UE is then instructed by the base station (BS) to measure the quality of candidate bands, which req
Externí odkaz:
http://arxiv.org/abs/1910.05305
Autor:
Mo, Jianhua, Ng, Boon Loong, Chang, Sanghyun, Huang, Pengda, Kulkarni, Mandar, AlAmmouri, Ahmad, Zhang, Jianzhong Charlie, Lee, Jeongheum, Choi, Won-Joon
A beam codebook of 5G millimeter wave (mmWave) for data communication consists of multiple high-peak-gain beams to compensate the high pathloss at the mmWave bands. These beams also have to point to different angular directions, such that by performi
Externí odkaz:
http://arxiv.org/abs/1908.01004
This paper studies the effect of the user hand grip on the design of beamforming codebooks for 5G millimeter-wave (mmWave) mobile handsets. The high-frequency structure simulator (HFSS) is used to characterize the radiation fields for fourteen possib
Externí odkaz:
http://arxiv.org/abs/1908.00850
We characterize the stability, metastability, and the stationary regime of traffic dynamics in a single-cell uplink wireless system. The traffic is represented in terms of spatial birth-death processes, in which users arrive as a Poisson point proces
Externí odkaz:
http://arxiv.org/abs/1906.04683
Autor:
Alammouri, Ahmad
In-band full-duplex (FD) communications have been optimistically promoted to improve the spectrum utilization and efficiency. However, the penetration of FD communications to the cellular networks domain is challenging due to the imposed uplink/downl
Externí odkaz:
http://hdl.handle.net/10754/608640