送交者: 吴礼 于 2006-3-31, 08:38:18:
回答: 猜猜这个牛人是谁? 由 heretic 于 2006-3-31, 02:32:01:
If I understood correctly, pseudo-noise based communications was used primarily by military, for its security and anti-jamming features (the same as the author above claimed). The contribution of Viterbi (founder of Qualcomm) was to point out (and eventually to convince the public) that pseudo-noise coding can be a spectrum-efficient method for multiple access channels, and a good way to provide diversity against frequency selective fading.