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revised_codeswban_11
说明： energy efficiency code for cognitive radio
- 2020-06-16 14:40:02下载
- 积分：1
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QAM
说明： 对数字信号进行相位幅度调制，并在接收端成功解调(QAM of Digital Signal and Successful Demodulation at Receiver)
- 2019-04-22 19:51:29下载
- 积分：1
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16QAM
产生16QAM基带信号，成型滤波通过AWG信道，接收端得到误码率和星座图。(The 16QAM baseband signal is generated, the shaping filtering is passed through the AWG channel, and the receiving end obtains the BER and constellation diagram.)
- 2018-06-07 18:55:06下载
- 积分：1
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BPSK调制仿真
bpsk调制仿真，可直接用
1、数字调制方法
数字调制就是把数字基带信号的频谱搬移到高频处，形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控（ASK）、频移键控（FSK）、绝对相移键控（PSK）、相对（差分）相移键控（DPSK）。在接收端可以采用想干解调或非相干解调还原数字基带信号。
数字信号的传输方式分为基带传输和带通传输。然而，实际中的大多数信道（如）无线信道具有丰富的低频分量。为了使数字信号在带通信道中传输，必须用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。(1, digital modulation method
Digital modulation is the transfer of the spectrum of a digital baseband signal to a high frequency to form a bandpass signal suitable for transmission in the channel. The basic digital modulation methods are amplitude keying (ASK), frequency shift keying (FSK), absolute phase shift keying (PSK), and relative (differential) phase shift keying (DPSK). At the receiving end, the digital baseband signal can be restored by using dry demodulation or non-coherent demodulation.
Digital signal transmission methods are divided into baseband transmission and bandpass transmission. However, most channels in practice, such as wireless channels, have rich low frequency components. In order for a digital signal to be transmitted in a band channel, the carrier must be modulated with a digital baseband signal to match the signal to the characteristics of the channel.)
- 2019-05-28 10:46:01下载
- 积分：1
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entropy
for entropy
H = entropy(S)
this command will evaluate the entropy of S, S should be row matrix
H = entropy([X Y Z])
this command will find the joint entropy for the 3 variables
H = entropy([X,Y],[Z,W])
this will find H(X,Y/Z,W).. you can use it for any combination of joint entropies
Please validate this function before using it
- 2009-05-22 03:49:16下载
- 积分：1
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2018
心电信号去噪方法等研究，采集，去除噪声等(Research on the denoising method of ECG signal, collection, noise removal, etc.)
- 2018-03-26 11:48:15下载
- 积分：1
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mini2440-qtopia
mini2440上qtopia应用程序开发步骤(arm-qtopia版本)(mini2440 steps on the qtopia application development (arm-qtopia version))
- 2009-12-04 15:49:16下载
- 积分：1
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cerdem
AWGN信道条件下 汉明编码和格雷编码的性能仿真程序(Hamming coding and Gray coding performance simulation program AWGN channel conditions)
- 2013-03-29 10:19:53下载
- 积分：1
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mimo_waterfilling
主要关于ofdma中资源分配动态分配的算法中的注水算法的介绍(it is about waterfilling allocation dynamic allocation of ofdma algorithm introduced)
- 2011-12-16 11:16:45下载
- 积分：1
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Massive MIMO
说明： 实现Massive MIMO容量分析的代码，相关文献为
Emil Bj?rnson Jakob Hoydis Luca Sanguinetti Massive MIMO has Unlimited Capacity IEEE Transactions on Wireless Communications(This is a code package is related to the follow scientific article
Massive MIMO has Unlimited Capacity)
- 2020-08-10 16:00:04下载
- 积分：1
