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用单片机实现广义八相相移键控调制解调器，需要解决的难点是解调与Ｖｉｔｅｒｂｉ译码的实时性问题，本文针对广义调制技术中分支量度的特殊计算方法提出了一种适合于单片机实现的新的解调算法及Ｖｉｔｅｒｂｉ译码实现方法．实验结果表明，对于２４００ｂｐｓ系统，这种方法是完全可行的．
In order to realize the generalized eight phase shift keying modem with single chip microcomputer, the difficult to be solved is the real-time problem of demodulation and Viterbi decoding. In this paper, a new method of branch metric measurement in generalized modulation is proposed. Demodulation algorithm and Viterbi decoding method. The experimental results show that this method is totally feasible for 2400bps system.