The Citizens Broadband Radio Service (CBRS) band is 150 MHz of spectrum made available for commercial broadband use on a shared basis with the federal government. NIST is creating models, tools, and datasets to assist in the development and enhancement of commercial systems that protect mission-critical federal systems from harmful radio frequency interference.
The FCC Part 96 rules establish a three-tier architecture for sharing the radiofrequency (RF) spectrum from 3550 MHz to 3700 MHz. Commercial users of the 3.5 GHz Citizens Broadband Radio Service (CBRS) band will share this spectrum with existing incumbents, including the federal government which currently operates mission-critical radiolocation services in this spectrum.
NIST aims to enhance and innovate the wireless communication technologies, models, and algorithms currently used in the 3.5 GHz CBRS band. In addition to the research areas described below, ongoing research emphasizes on investigating machine learning and deep learning techniques for classification of radar and CBRS signals, path loss prediction, and channel estimation and cognitive receiver design.
NIST has designed deep learning detectors to accurately detect the presence of radar signals for commercial 3.5 GHz sensors. (learn more)
NIST has developed test procedures and reference implementations that the regulator uses to certify commercial systems mediating access to this RF band. (learn more)
NIST has been engaged in the study of coexistence of the General Authorized Access (GAA) users in the CBRS band. (learn more)