(1) Department of Electrical and Computer Engineering,
Wireless Networking and Communications Group,
The University of Texas at Austin,
Austin, TX 78712 USA
firstname.lastname@example.org - email@example.com
(2) Huawei Technologies, Plano, Texas USA
Paper Draft - Archive Page - Slides
Related journal paper:
"Resolution-Adaptive Hybrid MIMO Architectures for Millimeter Wave Communications" (2018)
Related conference papers:
"ADC Bit Optimization for Spectrum- and Energy-Efficient Millimeter Wave Communications" (2007)
"Space-Time Fronthaul Compression of Complex Baseband Uplink LTE Signals" (2016)
Related poster: "ADC Bit Allocation under a Power Constraint for MmWave Massive MIMO Communication Receivers"
Multiantenna Communications Project
A1. In many papers, the mmWave channel estimation techniques for low-resolution ADC or even 1-bit systems have been developed and showed good accuracy. In our low-resolution system, we can employ such techniques by fixing the ADC resolutions.
Q2. How often should the ADC resolution switching occur?
A2. The best switching scenario is to switch the resolution at each channel coherence time. But in mmWave channels that have much shorter coherence time than the sub-3GHz channels, the coherence-time switching may not be possible. In this case, the switching can operate at the time scale of slowly changing channel characteristics such as large-scale fading and angle-of-arrival as they are the dominant factor for the bit allocation.
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Last Updated 08/15/17.