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Description: 在COFDM传输过程中白噪声的影响。信噪比从0～20db，BER的变化。调制方式：BPSK/QPSK/16PSK-COFDM transmission in the course of white noise impact. Signal-to-noise ratio from 0 ~ 20db, BER changes. Modulation : BPSK/QPSK/16PSK
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Size: 14336 |
Author: 于蕾 |
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Description: 这是一个误码率QPSK的仿真的文件,很有用的哦!快来看一看!-This is a QPSK BER simulation files, very useful Oh! Come take a look!
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Size: 95232 |
Author: 舒冰清 |
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Description: 程序的主要功能是做了一定范围的信噪比下，对每个信噪比：随机信号QPSK调制；
根据Alamouti方案的矩阵进行编码；发送信号经过瑞利信道和加入高斯白噪声；
接收信号采用最大比合并的方法；最后对合并信号进行最大似然判决并求误符号率。
结果表明10^-3对应大约12->13dB-Procedure main function is to do a certain range of SNR for each signal to noise ratio: random signal QPSK modulation program in accordance with Alamouti coding matrix send signals through Rayleigh channel and adding Gaussian white noise received signal using maximal-ratio combining method Finally the combined signal and the maximum likelihood decision for symbol error rate. The results showed that about 10 ^-3 corresponds to 12-> 13dB
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Size: 1024 |
Author: |
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Description: 主函数Alamouti(Nr,max_snr,max_err_symbol,symbol_per_frame)
调用函数QpskMapping(psudo_bit_sequence)－－二进制数据到QPSK信号的变换
调用函数RayleighCH(Nr,Nt)－－瑞利衰落信道模拟
仿真示例：
Alamouti(1,12,20,24)
说明：
1.2根发射天线、1根接收天线
2.最高信噪比为12dB，即仿真范围为0dB到12dB
3.在每个信噪比条件下,误符号数超过20即停止该信噪比条件下的仿真
4.每一帧数据为24个QPSK符号
综合仿真函数SimAlamouti(max_snr,max_err_symbol,symbol_per_frame)
具有一根接收天线系统的SER性能与二根接收天线的系统SER性能比较
SimAlamouti(12,20,24)-The main function Alamouti (Nr, max_snr, max_err_symbol, symbol_per_frame) function call QpskMapping (psudo_bit_sequence)- binary data to the QPSK signal transformation function call RayleighCH (Nr, Nt)- Rayleigh fading channel Simulation Example: Alamouti (1,12 , 20,24) Description: 1.2 transmission antennas, a receiving antenna 2. the highest SNR 12dB, that is, simulation range of 0dB to 12dB 3. in each signal to noise ratio conditions, the misuse of symbols that stop a few more than 20 The signal to noise ratio under the conditions of simulation 4. each frame of data for the 24 QPSK symbols integrated simulation function SimAlamouti (max_snr, max_err_symbol, symbol_per_frame) with a receiving antenna system SER performance and two receive antenna system SER performance comparison SimAlamouti (12,20,24)
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Size: 204800 |
Author: 老何 |
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Description: The software is capable to simulate space time code [1] for QPSK modulation using different number of state. Examples of generator matrix up to 256 stetes are provided. Variable signal to noise ratio (SNR) might be applied to produce bit error rate (BER) or frame error rate (FER) curves.-The software is capable to simulate space time code [1] for QPSK modulation using different number of state. Examples of generator matrix up to 256 stetes are provided. Variable signal to noise ratio (SNR) might be applied to produce bit error rate (BER ) or frame error rate (FER) curves.
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Size: 10240 |
Author: zhouyu |
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Description: Bit error probability curve for QPSK mimo 1*2,
Bit error probability curve for QPSK mimo 1*4-Bit error probability curve for QPSK mimo 1*2,
Bit error probability curve for QPSK mimo 1*4
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Size: 2048 |
Author: vinodh kumar |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN(加性高斯白噪声信道)信道(AWGN信道：不考虑通信信道信号时，由宽频范围描述的统计随机无线噪声。)。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, channel for AWGN (additive white Gaussian noise channel) channel (AWGN channel: do not consider communication channel signals, described by the scope of broadband wireless random statistical noise.). At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results.
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Size: 9216 |
Author: jehuty |
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Description: 提出了一个采用(2,1,7)卷积码+QPSK的中频调制解调方案,并在Xilinx公司的100万
门FPGA芯片上实现了该系统。该系统在信噪比SNR为6dB左右时可实现速率超过1Mbit/s、误码率
小于10-5的数据传输。
-Proposed a use of (2,1,7) convolutional code+ QPSK modulation and demodulation of the IF program, and in Xilinx' s FPGA chip one million on implementation of the system. The system SNR to 6dB signal to noise ratio at about the rate may achieve more than 1Mbit/s, less than 10-5 bit error rate of data transmission.
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Size: 62464 |
Author: 张同星 |
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Description: 设计了一个OFDM接收机，并采用1fI公司的TMS320C6416芯片进行实现。在假设理想
同步的前提下，该系统进行了FFT变化、使用了Ls(最小二乘法)进行信道估计，并且采用了
QPSK算法进行解调。最后将接收机输出数据与发端数据进行比较，在不同信噪比情况下计算其
误码率，得出了比较理想的结果。-An OFDM receiver is designed in山is paper and realized on the platform of the 1MS32OC6416 chip
of the TI company．Under the assumption of ideal synchronization．n叩transformation is realized in the system
wit}l LS method implemented in the channel estimation module and QPSK used in the demodulation module．
Finally，BER is calculated in different cases of SNR and the result is achieved as expected．
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Size: 243712 |
Author: 王熹 |
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Description: qpsk通过信道信噪比估计，包括qpsk，8psk，16psk，16qam-qpsk through the channel SNR estimation
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Size: 7168 |
Author: lulu |
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Description: 设定噪声为高斯白噪声，对2PSK调制解调的误码率进行统计，并与理论值进行比较，以图形方式表示误码率与信噪比间的关系。
-Set the noise is Gaussian white noise on the BER 2PSK modem statistics, and compared with the theoretical value, a graphical representation of the bit error rate and SNR relationships.
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Size: 1024 |
Author: 温倩 |
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Description: Passing signal to AWGN channel after QPSK modulation and plotting BER at SNR
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Size: 1024 |
Author: hamedvahedian |
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Description: QPSK调制的误码率与信噪比关系图，理论值与实际值的对比。-QPSK modulation the BER and SNR diagram
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Size: 1024 |
Author: 宁秀梅 |
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Description: 实现QPSK的仿真，画出误码率和信噪比的曲线-QPSK simulation to achieve, draw the curve of error rate and SNR
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Size: 3072 |
Author: 贾启胜 |
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Description: *Demonstrate convolutional encoding and decoding
*Simulate BER for QPSK and BPSK, plot and then **compare the result with the theoretical value.
*compare SER of the Rake and ML.
– Symbols are taken randomly from QPSK.
– Run the simulation for different SNR until at least
50 symbol errors are found
– Plot the figure with x-coordinate in SNR (dB) and ycoordinate
in SER. (Matlab function semilogy)
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Size: 7168 |
Author: inbustrious |
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Description: OFDM系统，调制方式QPSK，查看星座图，分析误码率-OFDM systems, modulation QPSK, view the constellations, the bit error rate analysis
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Size: 1024 |
Author: cai |
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Description: QPSK gray code BER,SNR -super ailqk-QPSK gray code BER,SNR -super ailqk
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Size: 13312 |
Author: chefo |
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Description: 存在多径的OPSK传输性能仿真。可以绘出不同信噪比下的误码率曲线图-The OPSK multipath transmission performance simulation. Can draw different SNR BER curves
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Size: 1024 |
Author: PT |
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Description: qpsk 信噪比仿真画图 信噪比范围0-11db-qpsk SNR simulation drawing
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Size: 1024 |
Author: wl |
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Description: QPSK,8PSK,16QAM等信号调制的信道容量与信噪比的关系matlab代码。(QPSK,8PSK,16QAM relationship between channel capacity and signal-to-nouse ratio.)
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Size: 1024 |
Author: 沐子酱 |
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