内容为pdf文字版介绍5G的编码与调制,主体为turbo吗,也介绍了BCH码和LDPC码1HistoricalPerspective,MotivationandOutline11.1AHistoricalPerspectiveonChannelCoding........................11.1.1AHistoricalPerspectiveonCodedModulation...................31.2MotivationforthisBook.............