Quadrature Phase Shift Keying Demo
标签： Quadrature Keying Phase Shift
上传时间： 2013-12-15
上传用户：妄想演绎师
We address the problem of blind carrier frequency-offset (CFO) estimation in Quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.
标签： frequency-offset estimation Quadrature amplitude
上传时间： 2014-01-22
上传用户：牛布牛
Numerical Quadrature using open methods.
标签： Quadrature Numerical methods using
上传时间： 2013-12-21
上传用户：1109003457
ICS564 Loop demo through PCI data path. DAC in Quadrature Upconverter mode
标签： Upconverter Quadrature through Loop
上传时间： 2013-12-24
上传用户：kr770906
ICS564 Loop demo through PCI data path. DAC in Quadrature Upconverter mode .
标签： Upconverter Quadrature through Loop
上传时间： 2013-12-31
上传用户：TF2015
Will perform 3D Gaussian Quadrature over a user-defined volume. The volume is defined by the user with function definitions entered in the appropriate spaces provided on the GUI. The user can change the number of Gauss points to use. Function inputs need not accept vector args.
标签： volume user-defined Quadrature Gaussian
上传时间： 2013-12-13
上传用户：417313137
Code for the Quadrature Amplitude modulation
标签： Quadrature modulation Amplitude Code
上传时间： 2013-12-24
上传用户：franktu
Add c++ support for Gaussian Quadrature v1.1
标签： Quadrature Gaussian support Add
上传时间： 2013-12-22
上传用户：cooran
Quadrature Amplitude Modulation (QAM）在MATLAB的仿真和应用
标签： Quadrature Modulation Amplitude MATLAB
上传时间： 2017-04-20
上传用户：er1219
OFDM digital modulation for wireless communications systems. multilevel Quadrature modulation with constellation with m symbol
标签： modulation communications multilevel Quadrature
上传时间： 2017-05-11
上传用户：天诚24
