Non coherent demodulation for 2PSK detects relation of carrier wave phase of the interval symbol by the (half period of carrier wave) delay and the adder, then the data is demodulated.
PSK非相干解调法将经延时半个载波周期的接收信号与原接收信号相加，检测出两相邻码元载波相位变化情况，从而解调出数字信息。
At that time our father insisted on a delay of a year, and now six months, half of the period specified, is over, and I remain firmer than ever in my resolution.
那时候父亲给我一年的期限，眼看过了六个月，规定的期限满了一半，我现在比任何时候都更坚定了。
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