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dbpsk调制解调程序
SYMPCHUNK sets the number of symbols demodulated at once with a constant carrier frequency and symbol timing offset. This is a fundamental decoder parameter that establishes its carrier and symbol timing tracking bandwidth. Set it too low and the demodulator can"t accurately determine carrier frequency and symbol timing on a noisy signal. Set it too high and the demodulator may not be able to track large symbol rate offsets caused by Doppler shift and/or A/D or spacecraft clock errors. Or it might have trouble tracking high rates of change in the carrier frequency due to Doppler acceleration.The current value of SYMPCHUNK is 4*N1 = 512, where N1 = 128 is the order of the convolutional interleaver. 512 symbols is 512 milliseconds at 1000 symbols/sec, giving a frequency/time determination SNR that is 10*log10(512) = 27 dB greater than the Es/N0, not counti
- 2022-03-05 11:28:24下载
- 积分：1
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基于FFT的非二进制LDPC译码
此程序为非二进制LDPC 码的仿真程序. 信道为AWGN, 调制方式 是BPSK.-This program is used to simulation nonbinary LDPC codes over AWGN channel and BPSK modulation. The decoding algorithm is in the probability domain and with the fast Hadamard transform in the check node.
- 2022-10-10 15:00:03下载
- 积分：1
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H.323 2000年规范的文档，是H.323 V4的标准，这是目前最通用的版本，是学习开发H.323的必备材料。...
H.323 2000年规范的文档，是H.323 V4的标准，这是目前最通用的版本，是学习开发H.323的必备材料。-2000 H.323 standard documents, is the standard H.323 V4, which is currently the most common form, is to study the development of the requisite material H.323.
- 2022-02-26 16:32:38下载
- 积分：1
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移动通讯协议文档，很有参考价值
移动通讯协议文档，很有参考价值-mobile communication protocol documents, was useful
- 2022-02-10 17:37:50下载
- 积分：1
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wireless sensor networks
以结束交互式VoIP流量所需的延迟。如果一个包
- 2023-02-22 01:15:03下载
- 积分：1
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reed
reed-solomon decoder encoder
- 2023-02-01 16:10:04下载
- 积分：1
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这是一个小小的屏保应用程序，不知道会有什么样的结果，我都没试过。...
这是一个小小的屏保应用程序，不知道会有什么样的结果，我都没试过。-This is a small screensaver application procedures, do not know what kind of outcome, I have never tried.
- 2022-02-14 17:41:16下载
- 积分：1
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3G系统中，动态信道分配的研究，固定和移动边界的问题。
3G系统中动态信道分配的研究，对于固定和可移动边界两种方案进行了仿真实现，可移动边界方案显示出了明显的优势。-3G system, dynamic channel allocation study, fixed and moving boundary for the two scenarios were simulated to achieve, removable border program showed a clear advantage.
- 2023-02-23 08:20:03下载
- 积分：1
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华为ＧＳＭ模块的测试程序，其中包括拨打电话，接听电话以及来电显示等功能，适合学习ＧＰＲＳ入门...
华为ＧＳＭ模块的测试程序，其中包括拨打电话，接听电话以及来电显示等功能，适合学习ＧＰＲＳ入门-Huawei GSM module test procedures, including call, receive calls, as well as features such as caller ID for learning GPRS portal
- 2022-02-20 20:56:14下载
- 积分：1
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You can get the zimo ,to display int the led displayer,and it use the vc++
led取模软件自己用VC写的液晶等字模提取软件，可以输入汉字，也可以打开BMP图。只需要修改少许代码就可以按自己的要求实现功能。-You can get the zimo ,to display int the led displayer,and it use the vc++
- 2023-07-31 01:45:03下载
- 积分：1
