Do manufacturers need to use the EMWIN-N software-based prototype design as described on the EMWIN website?
No. Manufacturers are free to design any alternative system that will work in compliance with the signal specifications. The EMWIN-N receiver prototype was designed primarily as a proof of concept to demonstrate that a receiver for the EMWIN-N signal could be constructed. The software defined radio concept has, however, become an important technology in the past several years because of its inherent flexibility in making future changes.
