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LDPC编码译码MATLAB代码
- 基于随机生成的ldpc编码,AWGN信道,基于对数似然比的BP译码,可在不同的信噪比下得到不同的误码率
DSSS
- 设计一个有干扰的直接序列扩频通信系统, PN码由m序列产生器产生,经过高斯白噪声信道。在接收端接收到的信号包括“有用信号+高斯白噪声+干扰”,将接收信号进行解扩,判决,得到用户的信号检测结果,绘制不同的扩频增益(增益值为10,30,50)下,误比特率随信噪比Eb/N0的变化曲线。-Design of a direct sequence spread spectrum interference system, PN code generated by the m sequence generato
8
- 8单径瑞利信道中的四发四收V-BLAST: (1) 请设计一种具体的导引辅助的信道估计方法,用Simulink进行仿真,测量16QPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线,画出比特信噪比与误码率的关系曲线。 (2) 计算所设计方案的频谱效率是多少,单位为bit/Hz/s。-8 Single-Path Rayleigh Channel Four received four V-BLAST: (1) Please design a specific guide-a
multiple_access_protocols
- 系统分别对无线通信中的几种重要的多址接入协议进行了仿真,包括pure-ALOHA,slotted-ALOHA,CSMA以及ISMA,对每种协议的信噪比-误码率关系进行了分析。-Of wireless communications systems are in several important multiple access protocol simulation, including the pure-ALOHA, slotted-ALOHA, CSMA and ISMA, signal to
2008_5
- 在三条径的瑞利信道中,对于直接序列扩频: (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法,接收机分别采用等均益合并、最大比合并。用Simulink进行仿真,测量BPSK的误码率性能,画出比特信噪比与信道估计均方误差的关系曲线,画出比特信噪比与误码率的关系曲线,请解释在误码率为0.01时,两种合并方式所表现的不同的物理意义。 (2) 设频率已经同步,请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法,用Simulink进行仿真(自己编写代码S-Function
xindaoguji
- 一种时分的导引辅助的信道估计方法,用Simulink进行仿真,测量BPSK的误码率性能,画出比特信噪比与误码率的关系曲线-A guided night-aided channel estimation methods, using Simulink simulation, surveying BPSK BER performance, drawn-bit signal to noise ratio and bit error rate curve
BPSK-reliay
- 在单径瑞利信道中,设计一种时分的导引辅助的信道估计方法,用Simulink进行仿真,测量BPSK的误码率性能,画出比特信噪比与误码率的关系曲线.-In a single Path Rayleigh channel, the design of a guided night-assisted channel estimation method, using Simulink simulation, measurement BPSK BER performance, draw-bit signal
DS-CDMA
- 设计DS-CDMA一种具体的码分导引辅助的信道估计方法,接收机分别采用等均益合并、最大比合并。用Simulink进行仿真,测量BPSK的误码率性能,画出比特信噪比与信道估计均方误差的关系曲线,画出比特信噪比与误码率的关系曲线-Design of DS-CDMA code at a specific guide-assisted channel estimation method, the receiver, respectively, the combined use of all benefi
DigitalbasebandtransmissionsystemimplementationMAT
- 数字基带传输系统的MATLAB仿真实现 function [sampl,re_sampl]=system_1(A,F,P,D,snr,m,N) 输入变量A ,F,P分别为输入信号的幅度、频率和相位,D为量化电平数,snr 为信道信噪比,N为D/A转换时的内插点数;输出变量sampl为抽样后的输入 信号,re_sampl为恢复出的输入信号。 数字基带传输系统的MATLAB仿真实现 [sampl,quant,pcm]=a_d_1(A,F,P,D) [change
matched_filter_gui
- matlab 匹配滤波器,探地雷达目标检测,非常有用!-matlab matched filter!GPR targets detect!very useful!
SNRESTIMATE
- 信噪比估计代码,附有IEEE文献一篇,在AWGN下进行了MCRB的相关仿真-A Comparison of SNR Estimation Techniques for the AWGN Channel
ofdm1
- 利用卷积编码和BPSK调制方式,关于高斯白噪声信道下信噪比与比特误码率关系的Simulink仿真-The use of convolutional coding and BPSK modulation on the Gaussian white noise channel ,the relationship between SNR and bit error rate using Simulink simulation
OFDM_sync
- Matlab的OFDM在多径Rayleigh信道下的同步 1. 假设频率已同步,设计OFDM一种具体的采用循环前缀进行时间同步方法,用Simulink进行仿真,画出比特信噪比与捕获概率的关系曲线。 2. 设时间已同步,设计OFDM一种具体的采用循环前缀进行频率同步方法,用Simulink进行仿真,画出比特信噪比与频率同步误差的关系曲线.-Matlab-OFDM in multipath Rayleigh channel synchronization 1. Assume th
code
- 用Matlab进行BPSK系统发送、接收端的仿真,含有发送端、AWGN信道、匹配滤波、下采样、解调、计算不同信噪比下的误码率,并绘制BER曲线-Matlab simulation of BPSK receiving system,including AWGN channel, match filter, down sample,demodulation and BER calculation
cdma_mmse
- DS-CDMA的MMSE算法程序,给出了不同信噪比下的BER性能比仿真曲线。-DS-CDMA of the MMSE algorithm program are given under different signal to noise ratio curve of BER performance than emulation.
ofdm
- 对OFDM通信系统进行仿真,使用AWGN信道,生成误码率与信噪比的仿真图形,并与理论图形进行比较-The simulation of the OFDM communication system, using the AWGN channel, BER and SNR generated graphic simulation, and compared with the theoretical graph
16QAM-OFDM
- 基于16QAM调制解调的OFDM信道估计,计算了不同信噪比下的误码性能曲线,并画出了图。-Comb based on the OFDM pilot channel estimation, calculation of the BER performance under different signal to noise ratio curve, and draw the map.
SAF_cap
- 本程序实现了中继协作时候对中继选择时候根据信噪比对中继的排序选择工作-implemente the relay system s order of the relay
MATLAB
- 本程序用以仿真块状导频时不同信噪比条件下的误码率和均方误差,信道估计采用最小二乘法和改进的最小二乘法。 -The pilot program for the simulation block different SNR when the bit error rate and mean square error channel estimation using the least square method and the improved least square method.
cdma2000-codes
- cdma2000的Turbo码模拟,从编码到传输到解码,最后输出信噪比误码率曲线-the simulation of cdma2000 turbo code,from code to transport to decode,and the output is the line line of snr to ber