搜索资源列表
carriergen
- GPS接收机设计中关于载波的产生、载波数控振荡器-carrier mixer、carrier nco
gensin
- 用fpga控制da发一定带宽正弦信号,用vhdl编写,用nco-Fpga controlled by a band-da made a sinusoidal signal, written in vhdl, with nco
DDC
- matlab 编写的简单数字下变频仿真程序,含NCO模块、混频、低通滤波、抽取。模块大多采用matlab自带函数实现- program for DDC simulink base on Matlab
cordic
- verilog编写的数字信号发生器NCO用CORDIC方法实现产生sin cos信号,流水线结构,简单实用。-verilog prepared by the digital signal generator NCO using CORDIC method implementation generate sin cos signal, pipelined architecture, simple and practical。
ddc
- 数字下变频matlab代码,包含NCO、混频、抽取、低通滤波器部分的仿真-DDC matlab code, including NCO, mixing, extraction, simulation, part of the low-pass filter
DCO
- 数控振荡器:可根据输入相差改变频率控制字,产生一组正交的正弦波,SIMULINK 模型-DCO/NCO
ASKMod
- 基于FPGA的ask调制程序,包括载波的生成,nco的设置-FPGA-based ask modulation procedures, including carrier generation, nco settings
AskDemod
- 基于FPGA的ask解调程序,包括载波的生成,nco的设置-FPGA-based ask demodulation process, including the carrier generation, nco settings
QpskCodeTrans
- 基于FPGA的dpsk调制程序,包括载波的生成,nco的设置-FPGA-based dpsk modulation procedures, including carrier generation, nco settings
FpgaDpskDemod
- 基于FPGA的dpsk解调程序,包括载波的生成,nco的设置-FPGA-based dpsk demodulation process, including the carrier generation, nco settings
fsk
- 基于FPGA的fsk调制程序,包括载波的生成,nco的设置-FPGA-based fsk modulation procedures, including carrier generation, nco settings
nco-cos
- 余弦波发生器,利用vhdl仿真软件可以产生余弦波图像-Cosine wave generator, the use of VHDL simulation software can generate cosine wave images
NCO2freqControlWord
- NCO频率控制字的计算方法,可以应用在数字中频/基带等众多场景。-The calculation is NCO frequency control word ,which can be used in digital IF/baseband algorithms and many other scenes.
DDC
- nco + cic + ddc 数字下变频抽取滤波的基础步骤,代码已通过调试-nco+ cic+ ddc
NCO
- 用Verilog语言编写的数字振荡器,既可以通过频率控制字调整输出频率,也可以通过相位控制字调整其输出相位,已通过调试验证-Verilog language with the digital oscillator, both through the frequency control word to adjust the output frequency, you can also adjust the output phase through the phase control word, h
16QAM
- 本代码是《通信信号处理》课程的大作业相应的代码。主要是通信信号发射端的仿真,具体功能是:1. 产生任意长度的伪随机序列,将序列映射为I,Q两路的信号,2.均方根升余弦滤波器成型. 3.经过通带衰减为3dB的倾斜滤波器(模拟信道衰落效果)4.插零,半带滤波器升抽样。 5.NCO处理单元调制-This code is communication signal processing courses corresponding to the large code. Mainly is the sim
waveform_gen_latest.tar
- 这个核心是一个向前的实现数控振荡器(NCO)-也被称为直接数字频率合成器(DDS)。除了生成标准的正弦/余弦输出波形,它也产生平方和锯齿用很少的额外资源输出。-This core is a straight forward implementation of a Numerically Controlled Oscillator (NCO)- also referred to as a Direct Digital Synthesizer (DDS). In addition to genera
nco_ug.pdf
- 对nc文件操作的强大工具,可以迅速简单的对nc文件进行修改(a powerful tool to handle the nc format file)
平方环VHDL实现
- 数字平方环电路,实现了从BPSK信号中提取相干载波的功能,简单易行,便于实现,并对其进行了数学推导和建模仿真,具有良好的实用价值。平方环以其电路结构简单而得到了广泛应用。但在平方环电路的设计中,由于NCO(或VCO)工作在2ωc频率上,当环路锁定后,其NCO(或VCO)的输出需经过二分频才能得到所需载波。而二分频电路在实现过程中,特别是在对NCO进行数字分频时,用FPGA实现太耗资源。