NAB Labs All-digital AM Test Project - Part II, Co-channel Laboratory Test Results

摘要

Since 2012, NAB Labs has been conducting field and laboratory tests of the HD Radio all-digital AM system. The purpose of this test project has been to characterize the digital coverage performance and interference behavior of the all-digital AM signal under a variety of conditions, with the goals of better understanding the capabilities and limitations of this signal and to develop a technical record of this as-yet unauthorized service. This paper, the second in a series, focuses on the laboratory interference testing portion of the project including a summary of the co-channel laboratory test results obtained by NAB Labs.