102 citations · 536 across the 37 of their papers we have counts for
26 papers · 1 filter
Spatial Indexing for System-Level Evaluation of 5G Heterogeneous Cellular Networks
Roohollah Amiri, Eren Balevi, Jeffrey G. Andrews +1
System level simulations of large 5G networks are essential to evaluate and design algorithms related to network issues such as scheduling, mobility management, interference manage…
Lens-based Millimeter Wave Reconfigurable Antenna NOMA
Mojtaba Ahmadi Almasi, Roohollah Amiri, Mojtaba Vaezi +1
This paper proposes a new multiple access technique based on the millimeter wave lens-based reconfigurable antenna systems. In particular, to support a large number of groups of us…
Reinforcement Learning for Self-Organization and Power Control of Two-Tier Heterogeneous Networks
Roohollah Amiri, Mojtaba Ahmadi Almasi, Jeffrey G. Andrews +1
Self-organizing networks (SONs) can help manage the severe interference in dense heterogeneous networks (HetNets). Given their need to automatically configure power and other setti…
Impact of Beam Misalignment on Hybrid Beamforming NOMA for mmWave Communications
Mojtaba Ahmadi Almasi, Mojtaba Vaezi, Hani Mehrpouyan
This paper studies hybrid beamforming (HB)-based non-orthogonal multiple access (NOMA) in multiuser millimeter wave (mmWave) communications. HB offers power-efficient and low-compl…
A New Millimeter Wave MIMO System for 5G Networks
Mojtaba Ahmadi Almasi, Roohollah Amiri, Hani Mehrpouyan
Millimeter Wave (mmWave) band provides a large spectrum to meet the high-demand capacity by the 5th generation (5G) wireless networks. However, to fully exploit the available spect…
Non-Orthogonal Multiple Access Based on Hybrid Beamforming for mmWave Systems
Mojtaba Ahmadi Almasi, Hani Mehrpouyan
This paper aims to study the utilization of non-orthogonal multiple access (NOMA) in hybrid beamforming (HB) multi-user systems called HB-NOMA to serve a large number of mobile use…
Reconfigurable Antenna Multiple Access for 5G mmWave Systems
Mojtaba Ahmadi Almasi, Hani Mehrpouyan, David Matolak +2
This paper aims to realize a new multiple access technique based on recently proposed millimeter-wave reconfigurable antenna architectures. To this end, first we show that integrat…
A New Reconfigurable Antenna MIMO Architecture for mmWave Communication
Mojtaba Ahmadi Almasi, Hani Mehrpouyan, Vida Vakilian +2
The large spectrum available in the millimeter-Wave (mmWave) band has emerged as a promising solution for meeting the huge capacity requirements of the 5th generation (5G) wireless…
A Machine Learning Approach for Power Allocation in HetNets Considering QoS
Roohollah Amiri, Hani Mehrpouyan, Lex Fridman +3
There is an increase in usage of smaller cells or femtocells to improve performance and coverage of next-generation heterogeneous wireless networks (HetNets). However, the interfer…
Joint Pilot Allocation and Robust Transmission Design for Ultra-dense User-centric TDD C-RAN with Imperfect CSI
Cunhua Pan, Hani Mehrpouyan, Yuanwei Liu +2
This paper considers the unavailability of complete channel state information (CSI) in ultra-dense cloud radio access networks (C-RANs). The user-centric cluster is adopted to redu…
A Multiband OFDMA Heterogeneous Network for Millimeter Wave 5G Wireless Applications
Solmaz Niknam, Ali A. Nasir, Hani Mehrpouyan +1
Emerging fifth generation (5G) wireless networks require massive bandwidth in higher frequency bands, extreme network densities, and flexibility of supporting multiple wireless tec…
Beamforming for Simultaneous Wireless Information and Power Transfer in Two-Way Relay Channels
Wei Wang, Rui Wang, Hani Mehrpouyan
This paper studies simultaneous wireless information and power transfer (SWIPT) systems in two-way relaying (TWR) channels. Here, two source nodes receive information and energy si…
Superimposed Signaling Inspired Channel Estimation in Full-Duplex Systems
Abbas Koohian, Hani Mehrpouyan, Ali A. Nasir +3
Residual self-interference (SI) cancellation in the digital baseband is an important problem in full-duplex (FD) communication systems. In this paper, we propose a new technique fo…
Energy Harvesting Wireless Sensor Networks: Delay Analysis Considering Energy Costs of Sensing and Transmission
Wanchun Liu, Xiangyun Zhou, Salman Durrani +2
Energy harvesting (EH) provides a means of greatly enhancing the lifetime of wireless sensor nodes. However, the randomness inherent in the EH process may cause significant delay f…
Timing and Carrier Synchronization in Wireless Communication Systems: A Survey and Classification of Research in the Last Five Years
A. A. Nasir, S. Durrani, H. Mehrpouyan +2
Timing and carrier synchronization is a fundamental requirement for any wireless communication system to work properly. Timing synchronization is the process by which a receiver no…
High Rate/Low Complexity Space-Time Block Codes for 2x2 Reconfigurable MIMO Systems
Vida Vakilian, Hani Mehrpouyan, Yingbo Hua +1
In this paper, we propose a full-rate full-diversity space-time block code (STBC) for 2x2 reconfigurable multiple-input multiple-output (MIMO) systems that require a low complexity…
High-Rate Space Coding for Reconfigurable 2x2 Millimeter-Wave MIMO Systems
Vida Vakilian, Hani Mehrpouyan, Yingbo Hua +1
Millimeter-wave links are of a line-of-sight nature. Hence, multiple-input multiple-output (MIMO) systems operating in the millimeter-wave band may not achieve full spatial diversi…
Channel Estimation and Optimal Training Design for Correlated MIMO Two-Way Relay Systems in Colored Environment
Rui Wang, Meixia Tao, Hani Mehrpouyan +1
In this paper, while considering the impact of antenna correlation and the interference from neighboring users, we analyze channel estimation and training sequence design for multi…
Interference Mitigating Satellite Broadcast Receiver using Reduced Complexity List-Based Detection in Correlated Noise
Zohair Abu-Shaban, Hani Mehrpouyan, Bhavani Shankar M. R. +1
The recent commercial trends towards using smaller dish antennas for satellite receivers, and the growing density of broadcasting satellites, necessitate the application of robust…
Overloaded Satellite Receiver Using SIC with Hybrid Beamforming and ML Detection
Zohair Abu-Shaban, Hani Mehrpouyan, Joel Grotz +1
In this paper, a new receiver structure that is intended to detect the signals from multiple adjacent satellites in the presence of other interfering satellites is proposed. We tac…
Enhanced List-Based Group-Wise Overloaded Receiver with Application to Satellite Reception
Zohair Abu-Shaban, Bhavani Shankar M. R, Hani Mehrpouyan +1
The market trends towards the use of smaller dish antennas for TV satellite receivers, as well as the growing density of broadcasting satellites in orbit require the application of…
Channel, Phase Noise, and Frequency Offset in OFDM Systems: Joint Estimation, Data Detection, and Hybrid Cramer-Rao Lower Bound
Omar H. Salim, Ali A. Nasir, Hani Mehrpouyan +3
Oscillator phase noise (PHN) and carrier frequency offset (CFO) can adversely impact the performance of orthogonal frequency division multiplexing (OFDM) systems, since they can re…
Channel Estimation, Carrier Recovery, and Data Detection in the Presence of Phase Noise in OFDM Relay Systems
Rui Wang, Hani Mehrpouyan, Meixia Tao +1
Due to its time-varying nature, oscillator phase noise can significantly degrade the performance of channel estimation, carrier recovery, and data detection blocks in high-speed wi…
Training-Based Synchronization and Channel Estimation in AF Two-Way Relaying Networks
Ali Arshad Nasir, Hani Mehrpouyan, Salman Durrani +2
Two-way relaying networks (TWRNs) allow for more bandwidth efficient use of the available spectrum since they allow for simultaneous information exchange between two users with the…