...率处理；软件无线电；带通采样；数字下变频； [gap=706]Keywords：Multi-speed processing；Software radio；Band-pass sample；Digital down converter； ...
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...软件无线电；中频数字化；带通采样；AD6640芯片 [gap=550]Keywords ：software radio；IF digitized；bandpass siginalsampling；AD6640 chip ...
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With these two methods, signals are received by doubling filter’s passband bandwidth without hardware structure change and bandpass sampling the signals after filtering.
这两种方法不改变系统结构，将多相低通滤波器带宽加倍。 在加宽后的滤波器通带内，通过带通采样的方法完成信号接收。
参考来源 - 宽带高灵敏度数字接收机This system transform miltifrequency and multiaccess signals from Intermediate Frequency to Baseband by application of key technologies in Software-Defined-Radio such as Bandpass Sampling,DDC,Decimation and Accesses Separation. The research in the baseband include Signal Type Identification and Digital Demodulation.
本论文利用软件无线电思想中的带通采样技术、下变频技术以及抽取技术对多频多路中频信号进行采样、下变频、抽取、单路信号提取等中频处理,将其变到基带,并对提取出的单路信号进行基带处理,基带处理包括信号调制样式识别和数字解调。
参考来源 - 软件无线电的系统仿真A design of high-speed data acquisition system based on band-pass sampling was presented and applied to the signal processing of wideband receiver.
文章以宽带侦察接收机信号处理为应用背景,论述了一种基于带通采样的高速数据采集系统的设计方案。
参考来源 - 基于带通采样的高速数据采集系统设计·2,447,543篇论文数据，部分数据来源于NoteExpress
研究了软件无线电中广泛采用的带通采样技术。
In this paper, bandpass sampling technology widely used in software defined radio is studied.
带通采样速率选取是软件无线电技术的关键问题之一。
Selection of band-pass sampling rate is a key problem of the software radio technology.
方法分析了带通采样信号的频谱和规律，导出了低速采样频率的选取公式。
MethodsAnalyze spectrum of the sample signal and propose the formula of common sample frequency in low speed.
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