Inter-symbol energy coding I have scoured my entire library and I can't find where I read about a method of using symbol energy intentionally smeared across multiple bit times in such a way that the symbols can be recovered correctly. Can someone point to any of the classic digital modulation books I am likely to have in my library where I would have read about this technique? I seem to recall it was a part of minimum shift keying techniques. It is frustrating that I can remember one or two of the figures but can't place where I read it.

Thanks.

Ray
The most likely possibility is that you're thinking of partial response signaling, of which GMSK is a special case. This is covered in many textbooks, e.g. in Proakis.