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Description: 实现简单图像处理，包括256色转灰度图、Hough变换、Walsh变换、中值滤波、二值化变换、亮度增减、傅立叶变换、反色、取对数、取指数、图像平移、图像旋转、图像细化、图像缩放、图像镜像、均值滤波、对比度拉伸、拉普拉斯锐化（边缘检测）、方块编码、梯度锐化、灰度均衡、直方图均衡、离散余弦变换、维纳滤波处理、逆滤波处理、阈值变换、高斯平滑。-simple image processing, including color to grayscale 256, the Hough transform, Walsh transform, Median filtering, binary conversion, brightness changes, Fourier transform, and color-from the few to admit index, image shifting, image rotation, refined images, image scaling, image mirroring, mean filtering, contrast stretching, Laplacian sharpening (edge detection), block codes, Sharpening gradient, gray balance, histogram equalization, discrete cosine transform, Wiener filter, reverse filtering, threshold transform, Gaussian smoothing.
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Size: 3360101 |
Author: 陈 |
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Description: 实现四路复用程序。通过walsh正交码的复用技术，matlab仿真-achieve multiplexing process. Walsh orthogonal codes through the Reuse, Matlab simulation
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Size: 2862 |
Author: 郭志 |
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Description: Generate orthogonal Walsh codes, which can be used in wireless communications such as CDMA system.
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Size: 6710 |
Author: July |
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Description: 实现四路复用程序。通过walsh正交码的复用技术，matlab仿真-achieve multiplexing process. Walsh orthogonal codes through the Reuse, Matlab simulation
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Size: 3072 |
Author: 郭志 |
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Description: Generate orthogonal Walsh codes, which can be used in wireless communications such as CDMA system.
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Size: 217088 |
Author: July |
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Description: Generates the Walsh-Hadamard codes and checks orthogonality
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Size: 1024 |
Author: 郑中 |
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Description: 直扩码分多址DS-CDMA是利用高速的WALSH正交码序列作为地址码，与多用户信息数据相乘得到信息数据的直接扩频信号，再经过BPSK调制后发送出去，经过AWGN无线信道的传输后，在接收端与本地产生的地址码进行相关检测，从中将地址码与本地码一致的用户数据选出，把不一致的用户数据删除。-DS-CDMA DS-CDMA is the use of high-speed WALSH orthogonal code sequences as address code, with multi-user information data has been multiplied by the direct spread spectrum data information signal, and then after a BPSK modulated sent through AWGN channel after transmission, at the receiving end with the locally generated address code associated Detect, which will address code with local codes consistent user data elected to delete user data inconsistencies.
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Size: 5120 |
Author: huangshuangping |
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Description: These are orthogonal complimentary code version of walsh codes which are or to be used in cdma systems.-These are orthogonal complimentary code version of walsh codes which are or to be used in cdma systems.
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Size: 1024 |
Author: KRUDZ |
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Description: WALSH CODES AND THEIR
PSEUDOALEATORY SEQUENCES
- INTRODUCTION
- THE REPRESENTATION AS ELEMENTS OF THE EXTENS
GALOIS FIELDS
- THE PSEUDORANDOM SEQUNCE GENERATORS MPLEMENTATION
- MAXIMAL SEQUENCE (M-SEQUENCES)
- GOLD CODES
- KASAMI CODES
- EXAMPLES OF PSEUNDOALEATOR SEQUNECES USED IN IS-95
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Size: 261120 |
Author: megr3z |
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Description: Walsh Hadamard codes algorithm
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Size: 1024 |
Author: ijimenez |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN信道。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system for spreading gain N = 16, the use of Walsh codes for direct sequence spread spectrum, BPSK modulation, AWGN channel for the wireless channel. Carried out in the receiver despreading, demodulation, decision, through the simulation to be one of the user' s bit error rate and signal to noise ratio of the simulation results.
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Size: 2048 |
Author: 美杏 |
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Description: This function generates Walsh Codes. The difference between this function and other functions available to generate walsh code is :
1. you can call this function directly in your script, you will have to pass only the value of a (length of code is 2 ^ a)
2. this function can return you both the walsh matrix and randomly selected row (you may need just one sequence for your script)
for usage details refer to file.
syntax: var = walshcode(x)
x = (0, 1, 2, 3, 4, ....)
==> length of code y = 2 .^ x = (1, 2, 4, 8, 16, ....)
by default the var will be a matrix (y x y) for getting any one sequence go to the file and invoke another built in function by removing (refer file)-This function generates Walsh Codes. The difference between this function and other functions available to generate walsh code is :
1. you can call this function directly in your script, you will have to pass only the value of a (length of code is 2 ^ a)
2. this function can return you both the walsh matrix and randomly selected row (you may need just one sequence for your script)
for usage details refer to file.
syntax: var = walshcode(x)
x = (0, 1, 2, 3, 4, ....)
==> length of code y = 2 .^ x = (1, 2, 4, 8, 16, ....)
by default the var will be a matrix (y x y) for getting any one sequence go to the file and invoke another built in function by removing (refer file)
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Size: 2048 |
Author: Rafal |
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Description: Walsh-Hadamard codes are mutually orthognal codes,
thus when used in synchronous CDMA, the interference between users is zero.
This programm generates Walsh-Hadamard codes and also checks the orthogonality.
You can change the code length by changing value of "code_length" at the top of program
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Size: 1024 |
Author: ry |
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Description: 代码实现了图像的walsh变换。程序包内包含变换的工程代码及测试效果图。-Code to achieve the walsh transform the image. The package contains transformation diagram of engineering codes and test results.
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Size: 153600 |
Author: 孟荨念 |
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Description: walsh codes in matlab
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Size: 1024 |
Author: gyanranjan |
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Description: Aim: do walsh coding with hamming distance.To compare WALSH decoding for synchronous CDMA with decoding using hamming distance.
a) System should be supplied with correct/ corrupted version (one/ two bit) of transmitted walsh code(s)
b) System should also have table for correct codes(walsh codes)
c) System should ab able to deocde the same using hamming distance property.
d) Copmare resutls for corrupted code(s) to check the efficacy of WALSH decoding technique (as in above experiment) compared to hamming distance decoding.-Aim: do walsh coding with hamming distance.To compare WALSH decoding for synchronous CDMA with decoding using hamming distance.
a) System should be supplied with correct/ corrupted version (one/ two bit) of transmitted walsh code(s)
b) System should also have table for correct codes(walsh codes)
c) System should ab able to deocde the same using hamming distance property.
d) Copmare resutls for corrupted code(s) to check the efficacy of WALSH decoding technique (as in above experiment) compared to hamming distance decoding.
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Size: 40960 |
Author: dhara |
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Description: CDMA and OFDMA are the multiple access techniques for the next generation wireless communication systems. In 3G systems CDMA is used and in 4G OFDMA technique is used. Recently in 3G systems Wideband Code Division Multiple Access (WCDMA) is used because it uses a wide bandwidth (5MHz) and provides more services [1], [2], [3]. The received Walsh codes are orthogonal in the downlink transmission of WCDMA
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Size: 299008 |
Author: shaik |
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Description: wh codes for simunlink
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Size: 2048 |
Author: paapa
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Description: Generate orthogonal Walsh codes, which can be used in wireles()
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Size: 6144 |
Author: wrzqurnrz
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Description: Generate orthogonal Walsh codes, which can be used in wireles()
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Size: 6144 |
Author: ogb!8235 |
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