Long-Term Performance and Propagation Measurements on Single and Tandem DigitalMicrowave Transmission Links. Volume 1. Analysis of Measurement Data

摘要

The report describes the results of an 18-month digital microwave radioperformance and propagation measurement project that was conducted on a portion of the Defense Communications System in Germany. More than 6 gigabytes of data were collected between April 1988 and October 1989. The collected data include end-to-end (user-to-user) performance data, radio performance and propagation data on one line-of-sight and one troposcatter link, and meteorological data. The end-to-end measurements are referred to as the Network Performance Characterization (NPC) data, and consist of error performance measurements on two separate 64 kb/s channels consisting of tandem terrestrial microwave links. The radio performance and propagation measurements are referred to as the Link Performance Characterization (LPC) data. The data consist of digital radio performance and propagation measurements made on a long (99-km) line-of-sight microwave link. The propagation measurements on the link include multipath delay spread, in-band power difference (IBPD), and receive signal level (rsl) measurements. The report provides summaries of the long-term statistics of both radio performance and propagation data.