64 citations · 174 across the 16 of their papers we have counts for
19 papers
Beamforming with Joint Phase and Time Array: System Design, Prototyping and Performance
Jianhua Mo, Ahmad AlAmmouri, Shenggang Dong +5
Joint phase-time arrays (JPTA) is a new mmWave radio frequency front-end architecture constructed with appending time-delay elements to phase shifters for analog beamforming. JPTA…
Joint Phase Time Array: Opportunities, Challenges and System Design Considerations
Young-Han Nam, Ahmad AlAmmouri, Jianhua Mo +1
This paper presents a novel approach to designing millimeter-wave (mmWave) cellular communication systems, based on joint phase time array (JPTA) radio frequency (RF) frontend arch…
3D Beamforming Through Joint Phase-Time Arrays
Ozlem Yildiz, Ahmad AlAmmouri, Jianhua Mo +4
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 co…
Joint Phase-Time Arrays: A Paradigm for Frequency-Dependent Analog Beamforming in 6G
Vishnu V. Ratnam, Jianhua Mo, Ahmad AlAmmouri +4
Hybrid beamforming is an attractive solution to build cost-effective and energy-efficient transceivers for millimeter-wave and terahertz systems. However, conventional hybrid beamf…
Escaping the Densification Plateau in Cellular Networks Through mmWave Beamforming
Ahmad AlAmmouri, Manan Gupta, Francois Baccelli +1
We study how dense multi-antenna millimeter wave (mmWave) cellular network performance scales in terms of the base station (BS) spatial density , by studying the signal-to-inter…
Area Spectral Efficiency and SINR Scaling Laws in Multi-Antenna Cellular Networks
Ahmad AlAmmouri, Jeffrey G. Andrews, Francois Baccelli
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…
Scaling Laws of Dense Multi-Antenna Cellular Networks
Ahmad AlAmmouri, Jeffrey G. Andrews, Francois Baccelli
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 anten…
Deep Learning Predictive Band Switching in Wireless Networks
Faris B. Mismar, Ahmad AlAmmouri, Ahmed Alkhateeb +2
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…
Beam Codebook Design for 5G mmWave Terminals
Jianhua Mo, Boon Loong Ng, Sanghyun Chang +6
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 als…
Grip-Aware Analog mmWave Beam Codebook Adaptation for 5G Mobile Handsets
Ahmad AlAmmouri, Jianhua Mo, Boon Loong Ng +2
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 (…
Stability and Metastability of Traffic Dynamics in Uplink Random Access Networks
Ahmad AlAmmouri, Jeffrey G. Andrews, Francois Baccelli
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…
A Unified Asymptotic Analysis of Area Spectral Efficiency in Ultradense Cellular Networks
Ahmad AlAmmouri, Jeffrey G. Andrews, Francois Baccelli
This paper studies the asymptotic properties of average area spectral efficiency (ASE) of a downlink cellular network in the limit of very dense base station (BS) and user densitie…
SINR and Throughput of Dense Cellular Networks with Stretched Exponential Path Loss
Ahmad AlAmmouri, Jeffrey G. Andrews, François Baccelli
Distance-based attenuation is a critical aspect of wireless communications. As opposed to the ubiquitous power-law path loss model, this paper proposes a stretched exponential path…
Can Uplink Transmissions Survive in Full-duplex Cellular Environments?
Hesham ElSawy, Ahmad AlAmmouri, Osama Amin +1
In-band full-duplex (FD) communication is considered a potential candidate to be adopted by the fifth generation (5G) cellular networks. FD communication renders the entire spectru…
Modeling Cellular Networks in Fading Environments with Dominant Specular Components
Ahmad AlAmmouri, Hesham ElSawy, Ahmed Sultan-Salem +2
Stochastic geometry (SG) has been widely accepted as a fundamental tool for modeling and analyzing cellular networks. However, the fading models used with SG analysis are mainly co…
Flexible Design for -Duplex Communications in Multi-Tier Cellular Networks
Ahmad AlAmmouri, Hesham ElSawy, Mohamed-Slim Alouini
Backward compatibility is an essential ingredient for the success of new technologies. In the context of in-band full-duplex (FD) communication, FD base stations (BSs) should suppo…
Harvesting Full-Duplex Rate Gains in Cellular Networks with Half-Duplex User Terminals
Ahmad AlAmmouri, Hesham ElSawy, Mohamed-Slim Alouini
Full-Duplex (FD) transceivers may be expensive in terms of complexity, power consumption, and price to be implemented in all user terminals. Therefore, techniques to exploit in-ban…
In-Band -Duplex Scheme for Cellular Networks: A Stochastic Geometry Approach
Ahmad AlAmmouri, Hesham ElSawy, Osama Amin +1
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 c…
In-Band Full-Duplex Communications for Cellular Networks with Partial Uplink/Downlink Overlap
Ahmad AlAmmouri, Hesham ElSawy, Osama Amin +1
In-band full-duplex (FD) communications have been optimistically promoted to improve the spectrum utilization in cellular networks. However, the explicit impact of spatial interfer…