1 citations · 2 across the 11 of their papers we have counts for
14 papers
Quantized MIMO: Channel Capacity and Spectrospatial Power Distribution
Abbas Khalili, Elza Erkip, Sundeep Rangan
Millimeter wave systems suffer from high power consumption and are constrained to use low resolution quantizers --digital to analog and analog to digital converters (DACs and ADCs)…
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…
Understanding Energy Efficiency and Interference Tolerance in Millimeter Wave Receivers
Panagiotis Skrimponis, Seongjoon Kang, Abbas Khalili +7
Power consumption is a key challenge in millimeter wave (mmWave) receiver front-ends, due to the need to support high dimensional antenna arrays at wide bandwidths. Recently, there…
MIMO Networks with One-Bit ADCs: Receiver Design and Communication Strategies
Abbas Khalili, Farhad Shirani, Elza Erkip +1
High resolution analog to digital converters (ADCs) are conventionally used at the receiver terminals to store an accurate digital representation of the received signal, thereby al…
Cell-Free Massive MIMO with Low-Complexity Hybrid Beamforming
Abbas Khalili, Alexei Ashikhmin, Hong Yang
Cell-Free Massive Multiple-input Multiple-output (mMIMO) consists of many access points (APs) in a coverage area that jointly serve the users. These systems can significantly reduc…
Hybrid Beam Alignment for Multi-Path Channels: A Group Testing Viewpoint
Ozlem Yildiz, Abbas Khalili, Elza Erkip
High-frequency bands such as millimeter-wave and terahertz require narrow beams due to path loss and shadowing. Beam alignment (BA) methods allow the transceivers to adjust the dir…
On Single-User Interactive Beam Alignment in Next Generation Systems: A Deep Learning Viewpoint
Abbas Khalili, Sundeep Rangan, Elza Erkip
Communication in high frequencies such as millimeter wave and terahertz suffer from high path-loss and intense shadowing which necessitates beamforming for reliable data transmissi…
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…
Capacity Bounds for Communication Systems with Quantization and Spectral Constraints
Sourjya Dutta, Abbas Khalili, Elza Erkip +1
Low-resolution digital-to-analog and analog-to-digital converters (DACs and ADCs) have attracted considerable attention in efforts to reduce power consumption in millimeter wave (m…
On Multiterminal Communication over MIMO Channels with One-bit ADCs at the Receivers
Abbas Khalili, Farhad Shirani, Elza Erkip +1
The fundamental limits of communication over multiple-input multiple-output (MIMO) networks are considered when a limited number of one-bit analog to digital converters (ADC) are u…
Tradeoff Between Delay and High SNR Capacity in Quantized MIMO Systems
Abbas Khalili, Farhad Shirani, Elza Erkip +1
Analog-to-digital converters (ADCs) are a major contributor to the power consumption of multiple-input multiple-output (MIMO) communication systems with large number of antennas. U…
On MIMO Channel Capacity with Output Quantization Constraints
Abbas Khalili, Stefano Rini, Luca Barletta +2
The capacity of a Multiple-Input Multiple-Output (MIMO) channel in which the antenna outputs are processed by an analog linear combining network and quantized by a set of threshold…