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PCM
在实际的调谐解调电路中,采用的是非相干载波解调,本振信号与发射端的载波信号存在频率偏差和相位抖动,因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决,得到的数字信号也不是原来发射端的调制信号,误差的积累将导致抽样判决后的误码率增大,因此数字QPSK解调电路要对载波误差进行补偿,减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)
- 2019-01-30 20:16:08下载
- 积分:1
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FBMC_test
说明: FBMC框架的搭建,和OQAM+PPN多项滤波器,大概框架都有(The construction of fbmc framework and OQAM + PPN multiple filters, probably all of them have)
- 2020-07-02 17:40:02下载
- 积分:1
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12234445
采用卡尔曼滤波器对系统的俯仰角、
滚转角和航向角的误差进行最优估计;设计数据融合的判别准则,并根据判据的判断结果调整卡尔曼
滤波器中的量测信息,使系统可用于小型无人机的定高自主飞行(Kalman filter system pitch angle, roll angle and yaw angle error optimal estimation design data fusion criterion, and adjust according to the criterion of judging the results of measurement in the Kalman filter, making the system set high for small UAVs autonomous flight)
- 2013-01-22 17:05:18下载
- 积分:1
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Matlab
AM、DSB调制,TDMA、CDMA、FDMA接入方式仿真,以及自己写的画出频谱的函数spectrum2(AM, DSB modulation, TDMA, CDMA, FDMA access method simulation, and my own spectrum way-spectrum2)
- 2021-04-22 18:48:48下载
- 积分:1
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ZigBee
ZigBee tutorial, good for a short finalt graduate course work
- 2009-09-29 05:04:33下载
- 积分:1
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《C++ Primer 3e 题解》
说明: C++ Primer中文版及题解,一本学习C++的好书.(C Primer and that the Chinese version of Solutions, a learning C books.)
- 2005-10-18 12:42:04下载
- 积分:1
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串口控制PWM输出
STM32F103通过串口控制PWM输出(STM32F103 control PWM output through serial port)
- 2020-12-22 11:29:07下载
- 积分:1
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Matlab_TracePro
matlab与tracepro通信接口文件(Working with Matlab and TracePro through Dynamic
Data Exchange)
- 2021-04-09 17:29:01下载
- 积分:1
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mcu-gr47
单片机发送报文控制手机模块GR47进行gprs连接登陆,发送接收数据(SCM reportedly sent mobile phone text control module for EDGE connectivity GR47 landing, send and receive data)
- 2006-07-19 16:52:55下载
- 积分:1
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easytong
This is a Tongxunlu system,very easy.
小型通讯系统,DOS界面。(This is a Tongxunlu system,very easy.)
- 2012-01-01 16:30:08下载
- 积分:1