Abstract
AbstractIn SCPC satellite systems intermodulation (IM) noise is generated due to transponder nonlinearity. It is known that this noise can be reduced by proper signal frequency allocation. In the conventional method the signal frequencies are allocated at integral multiples of a basic interval, that is, the minimum signal frequency separation. This paper is concerned with offset frequency allocation in which the signal frequencies are not necessarily integral multiples of a basic interval. Specifically, the IM noise power spectrum is analyzed for 2‐phase PSK signals and studies are made for the IM power reduction characteristics after passing the receiving filter, specific signal frequency allocations with reduced IM noise and IM noise improvement over equal‐interval frequency allocation. Also, starting with the Babcock allocation, offset frequency allocations are derived and their IM characteristics and frequency bandwidth are evaluated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Electronics and Communications in Japan (Part I: Communications)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
