Description: A FFT-based partial matched filter (PMF)
acquisition threshold setting method for fast GPS acquisition is
presented. Normal distribution and numerical fitting technique
instead of real decision variable (DV) distribution are used in
derivation to approximate the threshold expression, and the
modification method for the threshold expression is also
presented. The threshold expression is based on the individual
FFT Doppler bin false alarm probability rather than the
convention whole detector false alarm probability. The
proposed threshold expression can be adjusted according to
the false alarm probability, the noncoherent accumulation
(NCA) length and the estimated noise variance. Furthermore
we discuss the implementation of zero-padding FFT with its
advantage and limitation. The performance is superior
compared to the reference method in terms of signal-to-noise
ratio (SNR) when detection and false alarm probabilities are
used as measurement criteria. Platform: |
Size: 280576 |
Author:zohreh |
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Description: take a input vector which is no of users of b[kx1] and
code vector which will be a matrix now s=[Nxk],where
then give to matched filter,non-correlating detector,
by randomised sequence.-take a input vector which is no of users of b[kx1] and
code vector which will be a matrix now s=[Nxk],where
then give to matched filter,non-correlating detector,
by randomised sequence. Platform: |
Size: 1024 |
Author:yasir |
Hits:
Description: with channel,
take a input vector which is no of users of b[kx1] and
then give to matched filter,non-correlating detector,
and non-adaptive mmse,see the results by hadamard
by randomised sequence. Platform: |
Size: 1024 |
Author:yasir |
Hits:
Description: Function to plot the Region of convergence for Suprathreshold Stochastic Resonance detector, followed by a matched filter, for transient signal detection in shallow oceans. Platform: |
Size: 4096 |
Author:Suresh |
Hits:
Description: 。当各感知用户采用软判决方法,对于2
个感知用户合作和3个感知用户合作的情况,可对最优联合检测算法性能有015dB改善。-. When the user uses soft decision method of perception, perceptual user cooperation for 2 and 3 sensing user cooperation, the joint detection algorithm can best improve the performance of 015dB. Platform: |
Size: 449536 |
Author:宝宝 |
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Description: SIGNAL DETECTION FOR SPECTRUM SENSING
Spectrum sensing is a critical functionality in cognitive radio communications as it must be performed before allowing unlicensed users to access a vacant licensed band. Energy detector is also known as radiometer and it is most common method of spectrum sensing because of its low computational and implementation complexities. The coherent detector, also referred to as a matched filter, can improve detection performance if the primary transmitted signal, s, is deterministic and known a priori. Platform: |
Size: 122880 |
Author:ravi |
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Description: 图像增强算法麦科伊增强图像的对比度，上软件吗直接运行-Three different filters are applied to a different fundus image: (a)
the original image (b) edge detection by using Sobel operator (c) edge
detection by using morphological edge detector and (d) detection of
blood vessels by using the proposed 2-D matched filter Platform: |
Size: 5407744 |
Author:杨涛 |
Hits:
Search - matched filter detector