25 citations · 64 across the 15 of their papers we have counts for
11 papers · 1 filter
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-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…
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 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…
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…