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- A new algorithm of zerotree and fractal image is presented by selecting the best wavelet packet basis and different encoding methods were used, i. e. wavelet zerotree and fractal image. 在分析小波包变换、零树编码和分形编码的特点的基础上,通过选择最佳小波包基,对不同子带分别采取零树编码和分形预测编码等措施,提出了一种基于小波包变换的零树分形图像编码算法。
- Abstract: We developed a real-time wideband speech codec adopting a wavelet packet based methodology. 摘要:本文论述采用小波包法进行实时宽带语音编码。
- Simulation results show that the proposed system outperforms the conventional MC-CDMA and real wavelet packet based MC-CDMA, with superior capability against the fading. 仿真结果表明该系统要优于通常的MC-CDMA系统和基于实小波包变换的MC-CDMA系统,具有良好的抗衰落能力。
- Secondly, three single deck blast vibration signals were analyzed by wavelet packet based on software MATLAB and the change of energy distribution curve at different frequency bands was obtained. 其次,基于MATLAB时爆破振动信号进行小波包分析,得到了爆破振动信号在不同频带上的能量分布图。
- Transient power quality classification based on best wavelet packet basis decomposition 基于最优小波包基分解的暂态电能质量分类方法
- COMPLEX WAVELET PACKET BASIS FUNCTION MODULATION BASED FREQUENCY-HOPPING MULTIPLE ACCESS COMMUNICATION SYSTEM 基于复小波包基函数调制的跳频多址通信系统
- DENOISING AND DETECTION OF FAULTED MOTOR SIGNAL BASED ON BEST WAVELET PACKET BASIS 基于最优小波包基的电动机故障信号的消噪与检测
- Best wavelet packet basis 最佳小波基
- wavelet packet basis 小波包基
- Optimal wavelet packet base 最优小波包基
- Upon this basis a concept of DWPT-based wavelet packet multicarrier transmission system is established,and the optimal wavelet packet multicarrier modem technique is proposed. 在此基础上建立起基于DWPT的小波包多载波传输系统的概念,提出了最佳小波包多载波调制解调技术。
- Keywords MultiCarrier Modulation (MCM);OFDM;Wavelet Packet Based Multicarrier System;Scalable Image Code;Adaptive Allocation;Joint Source Channel Coding;Space Time Coding;MIMO; 多载波调制(MCM);OFDM;小波包多载波系统;图像分级编码;自适应分配;联合信源信道编码;空时编码;MIMO;
- On the basis of wavelet packet decomposition technique introduced firstly, the measured unstable oil-film oscillations of single-disc and single-span rotor system were investigated. 在介绍小波包分解原理的基础上,对试验测得的单盘单跨转子系统的油膜振荡非平稳信号用小波包分解方法进行了研究。
- Firstly, the characters of wavelet transform and wavelet packet analysis were introduced. 首先,简略地介绍了小波变换与小波包分析的特点。
- In this article, local discriminant basis (LDB) algorithm based on wavelet packet transform (WPT) is utilized to implement feature extraction and emitters recognition. 本文基于小波包变换,采用局部判别基(LDB)方法进行辐射源信号特征提取与识别。
- We choose wavelet and wavelet packet because wavelet transform (WT) itself has the character of multiresolution. 之所以选择小波和小波包变换是因为小波变换本身就是多分辨率的,这使得它比那些固定分辨率的变换,比如STFT(短时傅立叶变换)更加适合人类的生理声学模型。
- The wavelet packet transform can be used to compress seismic data in large batch processing. 在大批量地震数据处理中可以使用小波包变换压缩地震数据。
- The route filter packet based on the source and destination of the packet. 路由器针对包的来源和目的过滤包。
- Finally,the possibility of wavelet packet modulation application in Digital AM transmission system is discussed. 通过与基于离散傅里叶变换的正交频分复用调制系统进行比较 ,探讨了小波包调制应用于数字调幅传输系统的可能性
- In this paper,mean threshold is presented on which wavelet packet de noising is studied. 文中提出了平均阈值的概念 ;并在此基础上研究了小波包去噪的效果 .
