对于无线数字通信而言，通常将数字用户信号首先转换到模拟域中，然后通过一个或两个步骤将其调制到无线电频率。

For wireless digital communications, digital user signal is usually at first converted into analog domain and then modulated to radio frequency by one or two steps.

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无线电”“年代频率刻度盘上的数字保持不变。

The digits on the radio's frequency dial stay the same at all times.

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所以CORDIC算法来实现软件无线电直接数字频率合成器有助于节省芯片面积、降低功耗、减少成本。

Thus, software radio DDFS based on CORDIC algorithm can help to reduce chip area, power dissipation and cost.

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