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psk和qam以及rayleigh 能用的代码
QAM和QPSK进行误码率测试根据设定信噪比，得出在rayleigh 的仿真曲线真正帮助理解 qam，qpsk的调制解调到底是什么原理
- 2022-08-18 19:15:35下载
- 积分：1
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STC单片机实现红外对管的数据传输
用STC89C51实现红外对管的数据传输：1、先用一块STC单片机接好接受电路，利用数码管显示测试用的红外遥控器（一般买的开发版，都有一个小的红外遥控器），对比数据是否正确；2、上述完成并实现，利用第二块板子接好发射管电路（我是分开的，软件包里有2个代码，一个发射程序，一个接受程序）；3、都实现后，可以修改发射端的代码，会在接受电路的数码管上看见不同的数据，这样就实现了数据的传输，协议大家可以自己写。个人感觉发射端比较重要，红外采用PPM编码方式，一定要注意1和0高低电平的是时间。
- 2022-08-21 13:06:09下载
- 积分：1
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使用3Com USR Modem进行录音和放音
使用3Com USR Modem进行录音和放音 -Modem program Using 3Com USR Modem
- 2022-03-21 20:06:45下载
- 积分：1
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贡献一个基于osip协议栈的用户代理，sflphone，很不错的
贡献一个基于osip协议栈的用户代理，sflphone，很不错的-osip contribution to a protocol stack based on the user agent, sflphone, very good
- 2022-03-21 04:26:26下载
- 积分：1
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We investigate the case of independent Rayleigh faded paths between antenna elem...
We investigate the case of independent Rayleigh faded paths between antenna elements and find that with
high probability extraordinary capacity is available. Compared to the baseline n = 1 case, which by Shannon’s
classical formula scales as one more bit/cycle for every 3 dB of signaltonoise
ratio (SNR) increase, remarkably
withMEAs, the scaling is almost like n more bits/cycle for each 3 dB increase in SNR. To illustrate how great this
capacity is, even for small n, take the cases n = 2, 4 and 16 at an average received SNR of 21 dB. For over 99
of the channels the capacity is about 7, 19 and 88 bits/cycle respectively, while if n = 1 there is only about 1.2
bit/cycle at the 99 level. For say a symbol rate equal to the channel bandwith, since it is the bits/symbol/dimension
that is relevant for signal constellations, these higher capacities are not unreasonable. The 19 bits/cycle for n = 4
amounts to 4.75 bits/symbol/dimension while 88 bits/cycle for n = 16 amounts t
- 2023-04-26 08:00:04下载
- 积分：1
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此程序实现了一种改进的ofdm下的信道估计方法，综合了以往的几种内插方法，并加以改进...
此程序实现了一种改进的ofdm下的信道估计方法，综合了以往的几种内插方法，并加以改进-This program realise a new channel estimation beneath the ofdm system combining several former intersecting method.Furthermore, certain ameliorations are also being done.
- 2022-02-26 19:18:49下载
- 积分：1
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此代码是用于DVB系统的信道编码模块，采用（204，188）编码方式，编码后前188个字节是信息位，后16个字节为冗余位。思绪仿真后，通过验证。...
此代码是用于DVB系统的信道编码模块，采用（204，188）编码方式，编码后前188个字节是信息位，后16个字节为冗余位。思绪仿真后，通过验证。-This code is used for DVB systems channel coding module (204,188) encoding, after encoding the previous 188 bytes of information, and after the 16-bit byte for redundancy. Simulation thoughts through authentication.
- 2023-06-24 09:40:03下载
- 积分：1
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PPPoE通讯协议,用时作嵌入式时,挺有用的
PPPoE通讯协议,用时作嵌入式时,挺有用的-PPPoE protocol, used for embedded when quite used
- 2022-03-23 21:43:59下载
- 积分：1
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OPC document,collecting~
OPC document,collecting~
- 2023-08-26 18:40:04下载
- 积分：1
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超宽带（UWB）多频带OFDM物理层与固定
Ultrawideband (UWB) multiband OFDM physical layer with fixed-point transmitterreceiver modeling
- 2022-03-24 23:08:46下载
- 积分：1
