TABLE OF CONTENTS The most important regulations of the U.S. Federal Communications Commission (FCC) and the recommendations of the International Radio Consultative Committee ( Comit Consultatif International de Radio CCIR), related to digital microwave systems, are presented in Section 9.1.
The FCC regulations are probably the most stringent regulations in existence today. Significant parts of these regulations have been used as a model for the development of the Canadian regulations issued by the Department of Communications (DOC Canada). They have also been used as a model for the Japanese regulations, and the regulations for many countries in Europe as well as throughout the world. Even though, internationally, the CCIR does not have regulatory power, its recommendations are highly respected and implemented by most nations.
Each systems designer has the responsibility to ensure that the regulations prevailing in his country are adhered to and, if possible, also comply with the CCIR recommendations. In addition to satisfying regulations, the designer has to ensure that the overall system performs satisfactorily, that is, that the accumulated error rate at the far end of the system is sufficiently low. Error and jitter accumulation problems in regenerative repeaters are described in Section 9.2. Service-channel transmission methods, required for the maintenance of digital microwaves, are discussed in Section 9.3. Finally, in Section 9.4 transmission performance objectives are reviewed.
To minimize interference between adjacent digital and analog microwave channels, the FCC has issued detailed regulations...
