搜索资源列表
QPSK
- 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
qpsk
- 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.
simsnr
- Effect of white noise on a COFDM transmission This simulations looks at the effect of varying the SNR on the BER. The SNR is varied from 0 to 20dB, while the BER is tested by passing 96000 data words through the link and measuring the number
Alamouti.m
- 这个函数具有如下功能：对Alamouti空时编码进行仿真并绘出误码率与信噪比的关系图- This is a function that simulate the Alamouti Space-Time scheme and plot a BER vs SNR graph.
nrziviterbi
- nrzi viterbi with snr 2 , 4 ,6, 8 dB and calculating BER
uncodedBER
- the file which is uploaded is the uncoded systtem technique which we simulated. it gives the BER vs Snr curve.The un-coded system is simulated is by using randomly generated numbers and it s passed over the AWGN channel.the output of the matlab file
CH5
- This a GUI based system. The GUI is invoked from the command line by typing "ui_start". The GUI is self explanatory. Tool tips are given in blue color. The cursor needs to be positioned on these for detailed explanation. The main file is "runsim
Digital-baseband-system
- 数字基带系统将数字信号从时域上看时数字滚降，需要画出滚降前后的波形展示出来。频域上带宽变化了。输入滤波器之前的波形与采样判决之后的波形。采样判决前的频谱。 采样判决后的码型。 2、眼图（采样判决之前的眼图）（信噪比大眼图清晰） 3、误码曲线，（横坐标时信噪比，纵坐标时误码率） 4、Arfa变化对误码特性的影响，变好还是变差(变好)，眼图清晰度变化（清晰），传递函数的带宽的变化。（带宽越大）-1.Digital baseband system point of view the d
juanji
- matab实现卷积编译码，包括典型的（7，15）卷积码，通过画图体现误码率和信噪比的关系-matab achieve convolution encoding and decoding, including typical (7, 15) convolutional code, by drawing reflects the relationship between BER and SNR
AWGN
- matlab 构建AWGN 信道的构建，并且详细分析了BER 和信噪比-simulation on OFDM AWGN channel compute BER AND SNR perfermance
CatastrophicCodes
- 恶性码（灾难码）的仿真，计算不同信噪比下的PER和SER-MATLAB code used to calculate P[k] for each SNR. The output is then used to calculate the PER as 1− P[k = 0] and the BER
Alamouti-Space-Time-Code
- 无线通信技术的空时编码技术的代码，研究信号的信噪比，调高信道质量-This is a function that simulate the Alamouti Space-Time scheme and plot a BER vs SNR graph
MIMO-OFDM-Systems-Based-on-Preamble-
- MIMO OFDM 技术将成为第4 代移动通信系统的关键技术, 因MIMO OFDM 对时间和频率偏移非常敏感, 因此MIMO OFDM 同步显得尤为重要。提出了一种新的MIMO OFDM 定时同步和频偏同步技术。以GCL 序列为基础设 计了一个新的符合MIMO OFDM 同步技术的导频序列, 通过对该导频序列进行2 次相关得到频率估计, 并将所得频率 运用到定时同步中, 得到更为准确的时间估计
Alamoudi
- Alamouti的架构 输出误码率 输入信噪比 针对两发两收的mimo系统-This is an Amamoudi scheme used in the 2x2 MIMO system. The output is the BER and input is SNR.
Alamouti
- 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
dsss_vs_undsss
- 通信课程设计，直扩码的BER-SNR分析，dsss和bpsk调制，包括发送端与接收端，不同的码长在awgn信道下的性能分析。-Communication curriculum design, the DS code BER-SNR analysis, the DSSS, and bpsk modulation, including the sending end and receiving end, the performance of different code length in awgn
QAM
- 使用于初学Matlab的人，讲了QAM的调制解调以及误码率和信噪比的计算。-It is useful for the people who use the matlab first time. Both the modulation and the demodulation and the relationship between ber and snr are in the file.
auto_simulation_ber
- 基于simulink仿真通信系统性能时，能够自动仿真误码率与信噪比曲线。-The simulink simulation based communication system performance, automatic simulation BER and SNR curve.
MIMO
- MIMO系统 2*2ML检测BER（误码率）与信噪比的分析-The MIMO systems 2* 2ML detecting the analysis of the BER (bit error rate) and SNR
ASK_FSK_PSK
- ASK , FSK , PSK 调制解调。包括awgn情况下的ber-snr绘图。-modulation and demodulation of ASK , FSK , PSK in awgn channal.includ ber-snr figure