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cma7
利用MCMA对bpsk,qpsk,8psk进行盲均衡，并且求取误码率画出星座图(The use of MCMA on BPSK, QPSK,8PSK blind equalization, and calculating BER draw the constellation diagram)
- 2012-04-23 13:09:39下载
- 积分：1
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F103蓝牙
对于新手调试入手很快,通过32单片进行通信控制,对于蓝牙运用极大帮助。(For beginners, debugging is very fast, and communication control is carried out through 32 single chip.)
- 2020-06-25 04:20:01下载
- 积分：1
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Low-Complexity-PAPR-Reduction-Technique-for-STBC-
Selective mapping algorithm is proposed to reduce the peak-to-average power ration (PAPR) in MIMO-OFDM system.
It is proved that the conjugate symbols on two antennas have the same PAPR property with orthogonal space-time block coded (STBC). By using the characteristic, the computational
complexity cost and the side information (SI) is significantly
reduced compared with the concurrent SLM algorithm.
Simulation results demonstrate that the performance of the proposed algorithm outperforms the conventional concurrent
SLM algorithm.
- 2014-01-01 06:04:45下载
- 积分：1
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程序
说明： 1、基带码型仿真
（1）通过仿真观察占空比为50%、 75%以及100%的单、
双极性归零码波形以及其功率谱，分析不同占空比对
仿真结果的影响。
（2） 通过仿真产生一随机消息码序列，将其分别转换为
AMI码和HDB3码，观察它们的波形及其功率谱密度。
2、数字带通调制系统仿真
设计一个采用2ASK（ OOK） 调制的数字通信系统：
产生二进制随机数据，并仿真其对应的2ASK调制波形，
分析其频谱。所产生的调制波形加入不同信噪比的白噪声，
选取合适的接收方案，画出系统误码率曲线，并与理论误
码率进行对比。(1.Baseband pattern simulation
2. Simulation of digital band-pass modulation system)
- 2020-06-29 07:20:01下载
- 积分：1
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I-rife
频率估计，是一种比较简单的算法，很基础，有助于初学者应用(Frequency estimation, is a relatively simple algorithm, it is based applications to help beginners
)
- 2011-10-31 09:32:16下载
- 积分：1
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123
针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能 在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。(For multiple-input multiple-output with orthogonal frequency division multiplexing(MIMO-OFDM) systems,the error floor(EF) phenomenon at high signal noise rate(SNR) was induced by the expectation maximum(EM) channel estimation algorithm.In addition,the data transmission efficiency was declined obviously with the increasing number of transmit antennas.According to these problems,an improved and efficient EM channel estimation algorithm was pro-posed.Firstly,an accurate and equivalent signal model was introduc...)
- 2011-09-05 15:20:54下载
- 积分：1
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gray_counter_vhd
ldpc verilog code has been descripted in this program
- 2017-12-06 01:05:36下载
- 积分：1
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MIMO_OFDM_estimation
MIMO-OFDM信道估计，用于最小二乘法和线性最小均方估计方法的性能比较(MIMO-OFDM channel estimation for the linear least squares method and the least square method estimates Performance Comparison)
- 2006-10-27 10:52:53下载
- 积分：1
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CDMA
中国电信CDMA终端需求规范 数据终端AT命令接口分册 (China Telecom CDMA terminal needs AT command interface specification data terminal branch)
- 2011-10-10 11:37:52下载
- 积分：1
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EXIT
本源码包参考英国Southampton大学Robert G. Maunder教授2008年的EXIT charts开源demo，给出了通用(分量码多项式可自定义)并行级联Turbo码的EXIT charts的作图源码。同时可完成迭代轨线、BER等值线的绘制等工作。
由于对于码块长较大的情形仿真需要较长时间，源码包也给出了部分分量码多项式的仿真结果，可直接用于绘图。
源码包还给出了最经典的S.Ten Brink介绍EXIT charts基本原理的参考文献，以及本人对通信系统中迭代译码过程分析技术综述的小论文，希望对大家有所帮助。(This source package comes after Professor Robert G. Maunder s open source demo about EXIT charts in 2008 from University Southampton, UK. It is designed for universal (constituent code generation polynomial can be customized) Parallel
Concatenated Turbo Code EXIT charts. The iterative trajectories and BER contour drawing is also completed in this package. Since the long block case costs a lot of simulation time, some simulation results are included in the package. We also give the most classical introduction to the basic principles of EXIT charts from S. Ten Brink, as well as a document about analysis technologies for iterative decoding process in communication systems. Hope this will help.)
- 2009-07-12 12:13:21下载
- 积分：1
