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MIMO_OFDM
- 基于期望最大化(EM)的最大后验信道估计算法(MAP)在高信噪比(SNR)下将很难获得较低的估计误差,并且,对于导频辅助的MIMO-OFDM系统,OFDM符号的数据传输效率随着发送天线的增加而明显下降.为改善这两种缺陷,引入一种等效的信号模型来改善高SNR下的估计性能 在相邻多个OFDM符号内使用相移正交导频序列和联合估计来提高系统的数据传输效率和估计性能 根据角域内信道间的独立性来减小噪声对估计的影响.通过仿真实验可知,所提算法具有更小的估计误差和更高的数据传输效率.-Maximum a po
qpsk
- Passing signal to AWGN channel after QPSK modulation and plotting BER at SNR
SLNR
- SLNR下，信噪比和误码率的关系,比较SLNR和SINR最大的情况，SINR优于SLNR 1~2dB，但SLNR算法的计算量远小于SINR(ZF)-under slnr,the graph between snr and ber.
27796684bch_euc
- The exercise should be finished in English. 2. According to Prof. Zhang s requirement, this exercise mainly focuses on the BER performance of some wireless communication system using specific coding and modulation type through the AWGN channel. Si
wirelesscomm
- In this project we analyze and design the minimum mean-square error (MMSE) multiuser receiver for uniformly quantized synchronous code division multiple access (CDMA) signals in additive white Gaussian noise (AWGN) channels.This project is mainly bas
mimo_sim
- MIMO 系统仿真，对时变信道的自适应调制-erq.m : function for ERQ algorithm in MIMO systems space_wf.m : function for spatial domain power waterfilling st_wf.m : function for spatial and temporal domain waterfilling MIMO_rate.m : Plot spectral efficiency vs SNR f
DS-CDMA_with_BPSK_and_Walsh_code
- A simple program for simulation of CDMA system with Walsh-Hadamard Code. Result of this program is plot of BER vs SNR.
cdma
- cdma function used to evaluate snr versus diffrent parameters like no of users-cdma function used to evaluate snr versus diffrent parameters like no of users
cdma_in_matlb
- cdma function used to estimate snr vesus diffrent parametrs like fading and no of users
Asynchronous_CDMA
- This the simulink file that demonstrates the fundametal principle of operation behind asynchronous CDMA systems using Welsh codes. The system performance can be evaluated by changing the processing gain at the transmitter and by increasing or decreas
alamouti
- implement an alamouti algorithm using 2 transmittes and 1 receivers. evaluate the performance of BER base on the SNR
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
simulation_example_with_matlab
- BPSK modulatedion data as a function of SNR
QPSKMATLAB
- qpsk通过信道信噪比估计，包括qpsk，8psk，16psk，16qam-qpsk through the channel SNR estimation
MultiamplitudeSignal
- Multiamplitude Signal 通讯系统之模拟(包含错误率SNR各项资料)-Multiamplitude Signal Communication System Simulation (SNR contains all the information error rate)
This_one
- Cooperative communication_power control a) Generate random binary sequence of +1’s and -1’s. (b) Given different Power to the source and the relay as well (c) Multiply the symbols with the channel and then add white Gaussian noise. (d) At
mqam
- Passing signal to AWGN channel after QAM modulation and plotting BER at SNR
NEW
- Estimation Channel AWGN and selecting suitable modulation By SNR that obtain from channel and passing random signal to AWGN channel-Estimation Channel AWGN and selecting suitable modulation By SNR that obtain from channel and passing random signal to
bfsk
- clear all snrdB_min = 0 snrdB_max = 10 SNR (in dB)limits snrdB = snrdB_min:1:snrdB_max Nsymbols = input( Enter number of symbols > ) snr = 10.^(snrdB/10) convert from dB h = waitbar(0, SNR Iteration ) -clear all snrdB_min =
vij1
- function ber_ml=Alamoudi(snr,soglia) This function simulates a Alamouti scheme. The input variables are soglia and snr. Soglia: is the number of errors after which the iterations stop. For better results, put high value of soglia, but th