Wavelets for Waveform Coding of Digital Symbols
نویسندگان
چکیده
A wavelet-based coder-decoder (codec) structure is defined for baseband waveform coding. Numerical results for bandwidth efficiency are given, and a comparison between several different wavelets is presented. Moreover, it is shown that wavelets obey the Nyquist pulse shaping condition and provide a unified framework for analog pulse shaping concepts of communications.
منابع مشابه
Wavelets for waveform coding of digital symbols
A wavelet-based coder-decoder (codec) structure is deened for baseband waveform coding. Numerical results for bandwidth eeciency are given, and a comparison between several diier-ent wavelets is presented. Moreover, it is shown that wavelets obey the Nyquist pulse shaping condition and provide a uniied framework for analog pulse shaping concepts of communications.
متن کاملCHAPTER 1 Signals and Spectra
1 Format From other sources To other destinations Channel symbols Message symbols Message symbols Information sink Optional Essential Channel symbols Digital input m i Information source Pulse modulate Bandpass modulate Synchronization Bit stream Digital baseband waveform Digital bandpass waveform u i g i (t) s i (t) z(T) r(t) X M T C h a n n e l Format Detect Demod-ulate & Sample Source encode...
متن کاملConstruction of a class of trivariate nonseparable compactly supported wavelets with special dilation matrix
We present a method for the construction of compactlysupported $left (begin{array}{lll}1 & 0 & -1\1 & 1 & 0 \1 & 0 & 1\end{array}right )$-wavelets under a mild condition. Wavelets inherit thesymmetry of the corresponding scaling function and satisfies thevanishing moment condition originating in the symbols of the scalingfunction. As an application, an example is provided.
متن کاملEfficient Delay Characterization Method to Obtain the Output Waveform of Logic Gates Considering Glitches
Accurate delay calculation of circuit gates is very important in timing analysis of digital circuits. Waveform shapes on the input ports of logic gates should be considered, in the characterization phase of delay calculation, to obtain accurate gate delay values. Glitches and their temporal effect on circuit gate delays should be taken into account for this purpose. However, the explosive numbe...
متن کاملHybrid Image Compression using orthogonal wavelets
In this paper, a new algorithm is introduced for analyzing images in a better way based on the design of wavelets. Wavelet algorithms process data at different scales or resolutions. They have advantages over traditional fourier methods in analyzing physical situations where the signal contains discontinuities and sharp spikes. The fundamental idea behind wavelets is to analyze according to sca...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998