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QPSK 调制与解调
数字调制技术一套的基础功能选择特定的调制方案。一般的基础功能是互相正交的。可以使用 "克施密特正交化" 过程派生的基础功能。一旦选择了基础功能，任何信号空间中的向量可以表示为基函数的线性组合。
在正交相移键控 （QPSK） 两个正弦波 (sin 和 cos） 作为基函数调制的。调制被通过不同相的基础功能，根据消息符号。在 QPSK，调制是基础，在那里有一个符号包含 2 位的象征。
- 2023-08-22 20:00:04下载
- 积分：1
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provide an overview of the radar probability of detection calculations and relat...
provide an overview of the radar probability of detection calculations and related topics.-provide an overview of the radar probabili ty of detection calculations and related topic s.
- 2022-02-10 03:27:46下载
- 积分：1
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本例是基于TCP协议的，实现客户端与服务器之间文件的传输
本例是基于TCP协议的，实现客户端与服务器之间文件的传输-In this case is based on the TCP protocol, and implementation between the client and server file transmission
- 2022-04-11 02:58:43下载
- 积分：1
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生成2KHz和8KHz的混合信号，使该信号通过上述滤波器，观察滤波前后的波形变化和频谱分布情况。
在改信号中加入高斯白噪声，观察滤波前后的波形变化和频谱分布...
生成2KHz和8KHz的混合信号，使该信号通过上述滤波器，观察滤波前后的波形变化和频谱分布情况。
在改信号中加入高斯白噪声，观察滤波前后的波形变化和频谱分布情况。-2KHz and 8KHz generation mixed-signal, so that the signal through the above-mentioned filter, filter before and after observation of the waveform and spectrum distribution of the changes. Add to the signal in white Gaussian noise was observed before and after filtering the waveform and spectrum distribution of the changes.
- 2023-08-05 07:40:03下载
- 积分：1
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at91sam7s64的典型应用，内容很好，很值得参考，希望能给大家带来一定的帮助...
at91sam7s64的典型应用，内容很好，很值得参考，希望能给大家带来一定的帮助-at91sam7s64 the typical application, as very good and worth considering. We hope that they will certainly help
- 2022-04-06 20:47:02下载
- 积分：1
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一个在LINUX系统下的开源的项目MICO中演示如何使用CORBA的标准服务之一的事件服务，通过这个例程，用户可以了解CORBA事件服务的工作流程，并且可以很容...
一个在LINUX系统下的开源的项目MICO中演示如何使用CORBA的标准服务之一的事件服务，通过这个例程，用户可以了解CORBA事件服务的工作流程，并且可以很容易的扩展为自己的应用。-a Linux system in the open-source project MICO demonstrated how to use CORBA standard services, one of the events, through this routine, users can understand the CORBA event service workflow, and can be easily extended to their applications.
- 2022-08-05 16:42:18下载
- 积分：1
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Bluetooth
蓝牙基础的外文文档，讲解的比较基础，从各个方面介绍蓝牙，适合想了解蓝牙的朋友-Bluetooth-based foreign-language documents to explain the basis of comparison, from the introduction in all aspects of Bluetooth, for Bluetooth would like to know friends
- 2022-04-24 09:00:08下载
- 积分：1
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Winsock detailed routines use a TCP, UDP, DOWNLOAD operation instead of the Wins...
Winsock详细使用例程有TCP、UDP、DOWNLOAD操作不是使用Winsock控件的VB源代码。-Winsock detailed routines use a TCP, UDP, DOWNLOAD operation instead of the Winsock Control VB source code.
- 2022-04-09 15:46:29下载
- 积分：1
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voice compression format. The latest of which contains the documentation and cod...
g723语音压缩格式。里面包含了最新的说明文档和代码，可以使用VC来编译。对视频会议或者作VOIP的朋友很有帮助。-voice compression format. The latest of which contains the documentation and code can be used to compile VC. Right for video conferencing or VOIP helpful friends.
- 2022-03-05 17:02:06下载
- 积分：1
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compressed sensing
A simple example to verify the feasibility of applying compressed sensing for channel estimation. The pilot applies a PN pattern in the frequency domain. The density of pilot is less than the Nyquist sampling rate. Also it is assumed there are sparsity in the channel taps, which is the basis for applying compressed sensing.
- 2022-02-25 09:31:31下载
- 积分：1
