搜索资源列表
VQcoding
- 由matlab编写,带GUI界面。对bmp文件进行Vector Quantization。运行其中的VQ_GUI.m文件。 程序肯定是调试无误的。虽然比较耗时,但是最后能达到较好的图像效果和SNR。毕竟相比于VC,matlab运行较慢。 注意在点open打开了一个bmp文件过后,一定要先点VQ code,进行其他操作才能有效。-prepared by Matlab, with GUI interface. Bmp files to Vector Quantization. VQ_GUI.
rake_simulation
- 本程序对rake接收机的仿真程序 在matlab simulink下实现,其信道模型采用802.15.3a信道,信源部分的采用UWB信号,最后通过计算snr与errorbitrate来说明rake接收机性能-this program right rake receiver in the simulation program under Matlab Simulink. its channel model used 802 .15.3 a letter, the source of the s
fenxing
- 为提高语音端点检测(VAD)在较低信噪比(10 dB)下的准确率,提出一种基于短时分形维数的改进算法。结合语音信号的特点,对2种常用的语音信号分形维数计算方法进行了比较和选择,同时采用动态跟随门限值实现语音端点的自适应检测。试验结果表明:对于信噪比6~10 dB的带噪语音,此方法可以实现整段语音的检测,而且具有一定的噪声鲁棒性,系统运行期间能够自适应调整门限值以适应环境噪声的变化,提高了VAD算法的准确率。这个是源码matlab。-In order to improve voice activi
IEEE 802.15.4 物理层仿真程序
- 该程序为IEEE 802.15.4物理层仿真程序。工作频段为2.4GHz,信道模型为AWGN,仿真不同SNR情况下的BER。-This is a matlab programme of IEEE 802.15.4 which simulate the ber in different SNR values.The channel model is AWGN.
GoldsequenceCDMAsimulation
- 写一个MATLAB程序,实现4个时间同步的CDMA用户的仿真,其中每个用户都使用长度为L=31的不同的Gold序列。每个用户都采用它们代表的Gold序列的二进制(+-1)调制。每个用户的接收端将这个复合的CDMA接收信号相关,而这个复合的信号都在它们各自的序列上受到AWGN的污损(基于按码片相加)。在N=10000信息比特下,仿真估值并画出作为SNR的函数的CDMA通信系统的差错概率。-Write a MATLAB program, the realization of the four t
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
Untitled2
- In this programe a highly scattered enviroment is considered. The Capacity of a MIMO channel with nt transmit antenna and nr recieve antenna is analyzed.capacity of MIMO the result dependences Capacity (bit/s/Hz), and the SNR (dB), in this simulation
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
Link-a-System-Level-OFDM-Simulator
- 针对OFDM系统,分成链路级仿真和系统级仿真两个部分。为了降低系统级仿真的复杂度,采用链路级仿真的部分结果。-It contains mainly two parts, i.e. link-level simulator and system-level simulator. Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and
Analysis-on-Channel-Capacity-of-MIMO
- 多输入多输出(MIMO)通信系统相比其他的通信系统具有更高的频谱效率,在不增加发射功率以及信号带宽的 情况下,MIMO 技术可以有效地提高系统信道容量及其性能。利用均匀角能量分布以及相关矩阵,分析了相关信道下的MIMO 系统信道容量,得出了系统信道容量的通用公式,并利用MATLAB 进行仿真。仿真结果表明,相关性的增加意味着信噪比的减 小,圆形接收天线阵列半径与角度扩展是决定MIMO 系统信道容量的主要因素。-Multiple-input multiple output (MIMO)
tls_esprit
- esprit的matlab仿真程序,tsl算法,生成随信噪比递增的均方差变化图。-the esprit matlab simulation program, the tsl algorithm, to generate change in the mean square error with the SNR increase.
DFAF
- 该程序是使用Matlab仿真协同通信的DF(解码转发)基本性能,基本模型S-R-D三个节点,接收端使用MRC(最大比合并)。固定DF由于SR信道的错误,其性能受到限制,在大SNR情况下不能获得有效分集。而当SR距离足够近的时候,可能获得一定的分集增益-The program is a cooperative communication using Matlab simulation DF (decode forwarding) basic performance, the basic mode
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.
powersubtractionalgo
- Matlab Code to suppress estimate PSD, Noise in speech and minimise it and thus improve SNR
source-number-estimation
- 源信号数目估计MATLAB程序,包括IAIC,AIC,MDL,IMDL,MEVARC等5种算法,可得到5种算法在不同信噪比条件下的估计准确率性能曲线。-The number of source signals to estimate the MATLAB program, including five kinds of IAIC, AIC, MDL, IMDL, MEVARC algorithm available algorithms estimated accuracy in differe
LFM
- LFM线性调频波的MATLAB仿真 利用matlab软件设计匹配滤波器。具体包括: 1):阐述脉冲压缩(匹配滤波)的基本原理; 2):输入信号为线性调频信号,存在的噪声信号为白噪声; 3):通过脉冲压缩处理,讨论输出信噪比的改善。 -The the LFM chirp wave MATLAB simulation using matlab software design matched filter. Specifically including: 1): elaborat
wlan_11n_simulink
- 802.11n physical layer simulink model-802.11n WLAN PHY Simulation models of 802.11n (modified from 11a PHY model): wlan/IEEE80211n.mdl For all simulation models: -------------------------- Most simulation setting can be conf
maep
- 在闭启键控通信系统中,两个假设下的观察信号模型为: 若两个假设的先验概率相等,且 , ,采用最小平均错误概率准则,试确定判决表达式,并求最小平均错误概率,利用MATLAB软件比较其理论值、仿真值。上述情况中,噪声 是均值为 ,方差为 的高斯噪声,仿真信噪比范围: ,间隔为 。 -In the closed Kai keying communication systems, the observed signal model under two assumptions: equal
energydetectionN_Pd
- matlab认知无线电 能量检测 在不同采样点数的情况下,信噪比和检测概率的变化趋势比较。-Matlab Cognitive Radio, energy detection, in the different sampling numbers, the SNR and the probability of detection varing.
BasicWave
- Matlab常用信号产生函数演示实例:编写一个M文件,依次产生均匀分布的随机序列、高斯白噪声随机序列、方波信号序列、三角波信号序列、正弦波信号序列,以及信噪比SNR为10dB的加性高斯白噪声正弦信号。-Matlab commonly used signal generating function demo examples: write a M file, in turn generating uniformly distributed random sequences, Gauss white