The motivation for writing this article was that I started implementing blocks for demodulating RF signals on Field Programmable Gate Arrays (FPGAs). During that I was asking me what are the best methods and structures for doing that. Most of the text books dealing with the topic of receivers either focussing on practical concerns of analog receivers or have a mathematical point of view that is hard to realize in hardware. So I started some calculations that are summarized in this document.
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