| 1. | Ddc technology based on band - pass sampling
基于带通采样的数字下变频技术 |
| 2. | Digital down converter is one of the key technology of the sdr
数字下变频是软件无线电中的关键技术之一。 |
| 3. | One is the digital down conversion . the method of look - table is described in detail
其一是数字下变频算法，重点说明了其中的查表法及其推广。 |
| 4. | Being based on the theory of the sdr , the topic researched the actual model of ddc
本课题以软件无线电的理论为基础，研究了数字下变频的实际处理模型。 |
| 5. | The receiver used two stages of down conversion . the total gain of receiver is more than 43db
接收支路采用超外差两次下变频的方式,实验表明接收支路的总增益大于43db 。 |
| 6. | Then this paper delves into the application of downconvertion as baseband recovery in the spread communication system
随后就下变频在扩频通信系统中用作基带的恢复做了深入地研究。 |
| 7. | Digital down converter ( ddc ) is one of the core technologies in the software defined radio ( sdr ) receiver
数字下变频( ddc : digitaldownconvert )技术是软件无线电接收机的核心技术。 |
| 8. | This paper mainly expounds the techniques of downconvertion and error connection encode in leo spread spectrum communication system
本文主要研究在特种小卫星扩频通信系统中的下变频和纠错编码技术。 |
| 9. | The digital if signal is converted to zero if by digital down converter , then taken fft spectrum analysis with hann window in advance
数字中频信号首先通过数字混频下变频至零中频，然后作加海窗的复fft谱分析。 |
| 10. | Above all , the basic theory of digital receiver , such as the technique of sample , multirate signal processing , digital down converter , is introduced
首先介绍了数字接收机的基本理论:采样技术、多速率信号处理和数字下变频。 |
