25 citations · 64 across the 15 of their papers we have counts for
19 papers
Planning and Operation of Millimeter-wave Downlink Systems with Hybrid Beamforming
Yuan Quan, Shahram Shahsavari, Catherine Rosenberg
This paper investigates downlink radio resource management (RRM) in millimeter-wave systems with codebook-based hybrid beamforming in a single cell. We consider a practical but oft…
Optimal Single-User Interactive Beam Alignment with Feedback Delay
Abbas Khalili, Shahram Shahsavari, Mohammad A. Amir Khojastepour +1
Communication in Millimeter wave (mmWave) band relies on narrow beams due to directionality, high path loss, and shadowing. One can use beam alignment (BA) techniques to find and a…
Multi-User Scheduling in Hybrid Millimeter Wave Massive MIMO Systems
Seyedeh Maryam Hosseini, Shahram Shahsavari, Catherine Rosenberg
While mmWave bands provide a large bandwidth for mobile broadband services, they suffer from severe path loss and shadowing. Multiple-antenna techniques such as beamforming (BF) ca…
Multi-point Coordination in Massive MIMO Systems with Sectorized Antennas
Shahram Shahsavari, Mehrdad Nosrati, Parisa Hassanzadeh +3
Non-cooperative cellular massive MIMO, combined with power control, is known to lead to significant improvements in per-user throughput compared with conventional LTE technology. I…
On Single-User Interactive Beam Alignment in Millimeter Wave Systems: Impact of Feedback Delay
Abbas Khalili, Shahram Shahsavari, Mohammad A. Amir Khojastepour +1
Narrow beams are key to wireless communications in millimeter wave frequency bands. Beam alignment (BA) allows the base station (BS) to adjust the direction and width of the beam u…
A General Framework for Airplane Air-to-Ground Communications in mmWave and Microwave Bands
Ararat Shaverdian, Shahram Shahsavari, Catherine Rosenberg
Airplane sensors and on-board equipment collect an increasingly large amount of maintenance data during flights that are used for airplane maintenance. We propose to download part…
On Throughput of Millimeter Wave MIMO Systems with Low Resolution ADCs
Abbas Khalili, Shahram Shahsavari, Farhad Shirani +2
Use of low resolution analog to digital converters (ADCs) is an effective way to reduce the high power consumption of millimeter wave (mmWave) receivers. In this paper, a receiver…
On Optimal Multi-user Beam Alignment in Millimeter Wave Wireless Systems
Abbas Khalili, Shahram Shahsavari, Mohammad A. Amir Khojastepour +1
Directional transmission patterns (a.k.a. narrow beams) are the key to wireless communications in millimeter wave (mmWave) frequency bands which suffer from high path loss and seve…
Opportunistic Temporal Fair Mode Selection and User Scheduling for Full-duplex Systems
Shahram Shahsavari, Farhad Shirani, Mohammad A Khojastepour +1
In-band full-duplex (FD) communications - enabled by recent advances in antenna and RF circuit design - has emerged as one of the promising techniques to improve data rates in wire…
On the Rates of Convergence in Learning of Optimal Temporally Fair Schedulers
Farhad Shirani, Shahram Shahsavari, Elza Erkip
Multi-user schedulers are designed to achieve optimal average system utility (e.g. throughput) subject to a set of fairness criteria. In this work, scheduling under temporal fairne…
On the Fundamental Limits of Multi-user Scheduling under Short-term Fairness Constraints
Shahram Shahsavari, Farhad Shirani, Elza Erkip
In the conventional information theoretic analysis of multiterminal communication scenarios, it is often assumed that all of the distributed terminals use the communication channel…
A General Framework for Temporal Fair User Scheduling in NOMA Systems
Shahram Shahsavari, Farhad Shirani, Elza Erkip
Non-orthogonal multiple access (NOMA) is one of the promising radio access techniques for next generation wireless networks. Opportunistic multi-user scheduling is necessary to ful…
Capturing Capacity and Profit Gains with Base Station Sharing in mmWave Cellular Networks
Shahram Shahsavari, Fraida Fund, Elza Erkip +1
Due to the greater path loss, shadowing, and increased effect of blockage in millimeter wave cellular networks, base station sharing among network service providers has the potenti…
Adaptive Hybrid Beamforming with Massive Phased Arrays in Macro-Cellular Networks
Shahram Shahsavari, S. Amir Hosseini, Chris Ng +1
Hybrid beamforming via large antenna arrays has shown a great potential for increasing data rate in cellular networks by delivering multiple data streams simultaneously. In this pa…
Joint User Scheduling and Power optimization in Full-Duplex Cells with Successive Interference Cancellation
Shahram Shahsavari, David Ramirez, Elza Erkip
This paper considers a cellular system with a full-duplex base station and half-duplex users. The base station can activate one user in uplink or downlink (half-duplex mode), or tw…
Sectoring in Multi-cell Massive MIMO Systems
Shahram Shahsavari, Parisa Hassanzadeh, Alexei Ashikhmin +1
In this paper, the downlink of a typical massive MIMO system is studied when each base station is composed of three antenna arrays with directional antenna elements serving 120 deg…
Resource Sharing Among mmWave Cellular Service Providers in a Vertically Differentiated Duopoly
Fraida Fund, Shahram Shahsavari, Shivendra S. Panwar +2
With the increasing interest in the use of millimeter wave bands for 5G cellular systems comes renewed interest in resource sharing. Properties of millimeter wave bands such as mas…
Joint Cell Muting and User Scheduling in Multi-Cell Networks with Temporal Fairness
Shahram Shahsavari, Nail Akar, Babak Hossein Khalaj
A semi-centralized joint cell muting and user scheduling scheme for interference coordination in a multicell network is proposed under two different temporal fairness criteria. The…
Spectrum and Infrastructure Sharing in Millimeter Wave Cellular Networks: An Economic Perspective
Fraida Fund, Shahram Shahsavari, Shivendra S. Panwar +2
The licensing model for millimeter wave bands has been the subject of considerable debate, with some industry players advocating for unlicensed use and others for traditional geogr…