Low data rate transmission: Into the noise floor

摘要

When comparing similar products in the marketplace, there is a tendency among inexperienced engineers to fasten their attention on a single easily understood parameter and treat it as an approximate 'figure of merit'.rnIn the low power radio area this parameter is usually data rate. The assumption is made that, if a given module is capable of transmitting a 128kbit/s data stream then it is inherently superior to a unit operating at, for instance, 5kbit/s.