Digital loop system performance prediction using an impulse noise database

A methodology for capturing and reproducing the outside plant impulse noise environment in the laboratory is presented. This methodology permits outside plant impulse noise to be characterized and analyzed and its effects on digital loop systems to be studied in a controlled environment. The ability to subject digital loop systems to actual impulse noise present in the outside plant in this manner will enable loop system designers to acquire a better understanding of how bit errors are caused by impulse noise. It will also allow them to improve their designs during early product development stages through extensive testing, thus reducing the need for costly design changes at later stages of development. In addition, this capability would also be used to develop accurate and reliable loop system deployment guidelines. Accurate and reliable guidelines are essential where digital services have to be provided cost effectively and responsively