然而栅状编码差分幅相移键调变 讯号，会随著调变阶数以及编码率之不同，而使系统 之功率效益(power efficiency)与效能表现有所差异。因 此如何在考量传输速率、频宽、功率与效能表现上， 找到最佳化之传输调变模式，是个相当重要的课题。
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介绍低光功率接收机在有线电视HF C网络中的应用，并对信号指标进行测试和比较，对经济效益进行分析。
Introduced the application of low optical power receiver to HFC network. Signal testing and economical benefit analyzing were presented at the same time.
结果表明，冰蓄冷技术不但能有效地增加燃气轮机功率输出，且经济效益显著。
The results show that the said technology not only can effectively increase the power output of a gas turbine, but the economic benefits also to be obvious.
由于大有效面积非零色散位移光纤具有较高的额定最大功率，其直接效益之一就是可改善系统信噪比和加大放大器间隔。
The benefits of large effective area fibers are higher power handling capability for improved system signal to noise ratio (SNR), and longer amplifier spacing.
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