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Displaying 26 - 50 of 232

Power-Consumption Outage in Beyond Fifth Generation Mobile Communication Systems

February 11, 2021

Author(s)

Hamid Gharavi

One of the biggest problems facing future mobile systems beyond 5G (B5G) is the energy dissipation of mobile devices at high data rates. The heat generated by these devices can impact the performance as a result of a new type of outage called power

Deterministic Intra-Vehicle Communications: Timing and Synchronization

July 26, 2020

Author(s)

Hamid Gharavi

As we power through to the future, in-vehicle communications' reliance on speed is becoming a challenging predicament. This is mainly due to the ever-increasing number of electronic control units (ECUs), which will continue to drain network capacity, hence

Intelligent Traffic Adaptive Resource Allocation for Edge Computing-based 5G Networks

June 10, 2020

Author(s)

Hamid Gharavi

The popularity of smart mobile devices has led to a tremendous increase in mobile traffic, which has put a considerable strain on the fifth generation of mobile communication networks (5G). Among the three application scenarios covered by 5G, ultra-high

Energy-Efficient SWIPT-Empowered D2D ModeSelection

April 16, 2020

Author(s)

Hamid Gharavi

While mode selection has been envisioned as the most cost-effective way to address the interference issue in Device-to-Device (D2D) communications, existing works have been largely conducted without consideration of the energy depletion of devices. In this

Attractor selection based limited feedback hybrid precoding for uplink V2I communications

April 1, 2020

Author(s)

Hamid Gharavi

As an essential part of vehicle networks, the Vehicle to Infrastructure (V2I) needs the support of millimeter wave and massive MIMO technologies to enable high data rate applications, such as automated driving, real-time high-quality multimedia services

Guest Editorial: Special Issue on Communications and Data Analytics in the Smart Grid

January 30, 2020

Author(s)

Hamid Gharavi

The Smart Grid represents an unprecedented opportunity to move the electric grid into a new era of reliability, availability, and efficiency. It uses two-way communications, digital technologies, advanced sensing and computing infrastructure, and software

Cognitive Information Measurements: A New Perspective

December 1, 2019

Author(s)

Hamid Gharavi

From a traditional point of view, the value of information does not change during transmission. The Shannon information theory considers information transmission as a statistical phenomenon for measuring the communication channel capacity. However, in

An Energy-Aware Retransmission Approach in SWIPT-Based Cognitive Relay Systems

September 11, 2019

Author(s)

Hamid Gharavi

In this paper cooperative spectrum sharing is considered between a primary user (PU) and a secondary user(SU), where the off-the-grid secondary transmitter (ST) serves as a cognitive relay to forward both the received primary and secondary signals by

Guest Editorial for Artificial Intelligence for Cognitive Wireless Communications

June 30, 2019

Author(s)

Hamid Gharavi

Under the new service paradigm, artificial intelligence (AI) can play a significant role in the new generation of wireless communications systems. This special issue presents a comprehensive overview of research challenges and opportunities regarding

Spectral and Energy Efficiencies of Millimeter Wave MIMO with Configurable Hybrid Precoding.

June 20, 2019

Author(s)

Hamid Gharavi

Hybrid precoding architectures are widely studied for millimeter wave (mmWave) massive MIMO systems. A major challenge in designing hybrid precoders is the practical constraints on the number of RF chains, which can have a direct impact on the spectral and

Wireless Power Transfer and Energy Harvesting: Current Status and Future Prospects

May 15, 2019

Author(s)

Jun Huang, Hamid Gharavi

The rechargeable battery is the conventional power source for mobile devices. Limited battery capacity and frequent recharging require researches to find new ways to deliver power without the hassle of connecting cables. Novel wireless power supply methods

Exact Moments of Mutual Information of Jacobi MIMO Channels in High-SNR Regime

December 10, 2018

Author(s)

Hamid Gharavi

In this paper, we propose an analytical framework to derive all positive integer moments of MIMO mutual information in high-SNR regime. The approach is based on efficient use of the underlying matrix integrals of the high-SNR mutual information. As an

Feature Topic: Enabling Technologies for Smart Internet of Things

September 18, 2018

Author(s)

Hamid Gharavi

This feature topic aims at providing timely and comprehensive overviews of the current state-of-the art in terms of fundamental theoretical innovations and technological advances and towards exploiting smart caching, communications, computing and