1.  outphasing modulation
2.  phase-reversal modulation

• 1. 反相调制: phase inversion modulation
• 2. 反相差分调制方式: differential phase inversion modulation system
• 3. 反向交叉相位调制: Counter cross phase modulation

• 1.使所述四进位输出符号的位反相将产生具有(G, i)约束的输出比特流，如在反向串连调制系统中所使用的PRML (G, i)码中那样。
  Inverting the bits of the 4-ary output symbols produces an output bit-stream with (g, I) -constraints as in the PRML (g, I) codes used in reverse-concatenation modulation systems.
  dict.yoduao.com

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