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Channel Estimation for Hybrid Architecture Based Wideband Millimeter Wave Systems
Kiran Venugopal, Ahmed Alkhateeb, Nuria González Prelcic +1
Hybrid analog and digital precoding allows millimeter wave (mmWave) systems to achieve both array and multiplexing gain. The design of the hybrid precoders and combiners, though, i…
Multi-Layer Precoding: A Potential Solution for Full-Dimensional Massive MIMO Systems
Ahmed Alkhateeb, Geert Leus, Robert W. Heath
Massive multiple-input multiple-output (MIMO) systems achieve high sum spectral efficiency by offering an order of magnitude increase in multiplexing gains. In time division duplex…
Dynamic Subarrays for Hybrid Precoding in Wideband mmWave MIMO Systems
Sungwoo Park, Ahmed Alkhateeb, Robert W. Heath
Hybrid analog/digital precoding architectures can address the trade-off between achievable spectral efficiency and power consumption in large-scale MIMO systems. This makes it a pr…
Modeling and Analyzing Millimeter Wave Cellular Systems
Jeffrey G. Andrews, Tianyang Bai, Mandar Kulkarni +3
We provide a comprehensive overview of mathematical models and analytical techniques for millimeter wave (mmWave) cellular systems. The two fundamental physical differences from co…
Hybrid Architectures with Few-Bit ADC Receivers: Achievable Rates and Energy-Rate Tradeoffs
Jianhua Mo, Ahmed Alkhateeb, Shadi Abu-Surra +1
Hybrid analog/digital architectures and receivers with low-resolution analog-to-digital converters (ADCs) are two low power solutions for wireless systems with large antenna arrays…
Gains of Restricted Secondary Licensing in Millimeter Wave Cellular Systems
Abhishek K. Gupta, Ahmed Alkhateeb, Jeffrey G. Andrews +1
Sharing the spectrum among multiple operators seems promising in millimeter wave (mmWave) systems. One explanation is the highly directional transmission in mmWave, which reduces t…