I read a sci-fi book about this a while back. The protagonist's wife dies of some malady and so he has her cryogenically frozen. He then wants to freeze himself

I read a sci-fi book about this a while back. The protagonist's wife dies of some malady and so he has her cryogenically frozen. He then wants to freeze himself and have himself thawed once her malady could be cured, but realizes no one would ever wake him as-is. So he pivots his career into interviewing pop culture folk from all over the globe and publishes the interviews. Eventually some rich guy thaws him out so he can learn more about his interviews and he goes on from there trying to cure-and-revive his wife. IIRC he keeps freezing and thawing himself throughout millennia... can't recall the name of it though! Arg.