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constant envelope modulation 恒包络调制
non -constant envelope modulation 非恒定包络调制
modulated constant envelope signal 已调的恒定包络信号
And I'm talking about companies that can produce a relatively constant stream of new technology products like that and are able to constantly push the envelope of what's possible.
这些公司可以持续稳定的研发新的技术，可以不断挑战自己的极限。
The offset quadrature phase-shift-keyed(OQPSK) is an effective digital constant envelope modulation for band-limited nonlinear channel.
偏移四相相移键控（OQPSK）是一种适用于在限带非线性信道中使用的高效恒包络数字调制技术。
Theoretical analysis proves that CPQPSK signal has constant envelope.
理论分析表明，CPQPSK信号具有恒定包络。
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