数字控制振荡器（NCO，numerical controlled oscillator）是软件无线电、直接数据频 率合成器（DDS，Direct digital synthesizer）、快速傅立叶变换（FFT，Fast Fourier Transform） 等的重要组成部分，同时也是决定其性能的主要因素之一，随着芯片集成度的提高、在信号 处理、数字通信领域、调制解调、变频调速、制导控制、电力电子等方面得到越来越广泛的 应用。-Digital controlled oscilla

Increasing interest in ultra-wideband (UWB) communications has engendered the need for a test bed for UWB systems. An FPGA-based software-defined radio provides both postfabrication definition of the radio and ample parallel processing power. Thi

QAM Radio in Matlab. Software defined radio with transmitter and receiver simulated in Matlab. 16-QAM.

本代码设计的是一个通讯系统软件无线电中变换比为5/4的分数倍抽取器，用Verilog编程首先实现4倍内插，再实现5倍抽取。-The code design is a software-defined radio communication system in transformation ratio 5/4 points times the extractor, using Verilog programming the first to achieve four times the inter