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2
说明: 提出了正交频分复用(O FDM ) 系统中一种新的载波频偏估计算法L 载波频偏估计过程可分
为获取和跟踪, 其中, 获取过程和时间同步是同时完成的L新算法可实现的最大载波频偏获取范围
是整个信号带宽的一半L新的跟踪算法是一个最大似然算法, 在加性白噪声高斯信道(AW GN ) 下,
当N (训练序列长度的一半) 等于128 时, 其性能比Schm idl 算法提高约7127 dB 在多经信道下, 当
信噪比不是很高时, 新算法仍具有优势L(new carrier f requency offset est imat ion scheme in o rthogonal f requency
division mu lt ip lex ing (O FDM ) system is p ropo sed. The carrier f requency offset est i2
mat ion includes acqu isit ion and t rack ing, and acqu isit ion as w ell as t im ing synch ro2
n izat ion can be perfo rmed simu ltaneou sly w ith h igh accu racy. The max imum acqu i2
sit ion range can be up to one half of overall signal bandw idth. The p ropo sed t rack2
ing est imato r is a max imum 2likelihood est imato r, and in AW GN channel, abou t
7127dB imp rovemen t is ob tained compared to the Schm idl’s algo rithm w hen N =
128 in mu lt ipath channel, the p ropo sed algo rithm wo rk s w ell at moderate SNR.)
- 2010-05-18 18:31:18下载
- 积分:1
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detection
固定资产监测,内含源码,子函数,数字图像处理课程设计,参考冈萨雷斯的《数字图像处理MATLAB版》(Fixed asset monitoring, containing source, Functions, digital image processing course design, with reference to Gonzalez s Digital Image Processing MATLAB Edition )
- 2014-11-22 21:22:51下载
- 积分:1
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attachments-(1)
The file contains matlab code for ask,Bpsk,msk,Bfsk,QPSK
- 2014-01-06 16:19:34下载
- 积分:1
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MVDR
这里是MVDR应用于数字波速形成技术,功能强大,同时附带两篇做的时候用的参考文献(This is the wave velocity of the formation of MVDR digital technology, powerful and at the same time doing two incidental references used)
- 2009-05-28 11:28:19下载
- 积分:1
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eg23-jiaotongliuliangyuce
《MATLAB神经网络30个案例分析》中的第23个例子,案例23 小波神经网络的时间序列预测-短时交通流量预测。希望对大家有一定的帮助!(The MATLAB neural network analysis of 30 cases of 23 example, 23 cases of wavelet neural network time series forecasting- short-term traffic flow prediction. Hope to have certain help to everybody!
)
- 2013-09-20 16:40:21下载
- 积分:1
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xiaobobao
ch3=softt(h3,thr1 clear
clc
I=imread( lena512.bmp )
imshow(I)
I=double(I)
II=I+30*randn(size(I))
figure
imshow(II,[])
[a1,h1,v1,d1]=dwt2(II, sym8 )
[a2,h2,v2,d2]=dwt2(a1, sym8 )
[a3,h3,v3,d3]=dwt2(a2, sym8 )
sigma=median(abs(d1(:)))/0.6745
x=3*sigma
thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x 小波图像去噪( ch3=softt(h3,thr1 clear
clc
I=imread( lena512.bmp )
imshow(I)
I=double(I)
II=I+30*randn(size(I))
figure
imshow(II,[])
[a1,h1,v1,d1]=dwt2(II, sym8 )
[a2,h2,v2,d2]=dwt2(a1, sym8 )
[a3,h3,v3,d3]=dwt2(a2, sym8 )
sigma=median(abs(d1(:)))/0.6745
x=3*sigma
thr1=x*2^(-1) thr2=x*2^(-0.5) thr3=x )
- 2012-05-26 11:08:34下载
- 积分:1
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Cuckoo-Optimization-Algorithm-for-ANN-cost
not good - Cuckoo Optimization Algorithm for ANN cost --- Cuckoo Optimization Algorithm --- - Matlab Toolbox Ver. 1.0.1 - Programmed by- Ramin Rajabioun, 2011 + This code minimizes your cost function, so don t change any part of
- 2013-12-10 16:47:02下载
- 积分:1
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Lorenz_control
陈关荣老师的《Lorenz系统族的动力学分析控制与同步》一书的电子版(Chen Guan-Rong teacher, " Lorenz Systems Family Dynamic Analysis of Control and Synchronization," a book of the electronic version of the)
- 2010-02-09 10:19:12下载
- 积分:1
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CORDIC_by_nini
CORDIC和查表法绘制频率为100khz的正弦波(CORDIC methods)
- 2012-03-31 17:25:19下载
- 积分:1
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CommunicationSystemOf16QAM
一个16QAM数字调制后的通信系统,包括信号发生器,调制器,信道传输,接收器,均衡器等部分(After a 16QAM digital modulation communication system, including the signal generator, modulator, channel transmission, receivers, and other parts of EQ)
- 2009-01-15 10:45:44下载
- 积分:1