Fundamentals of an Optimal Multirate Subband Coding of Cyclostationary Signals
Abstrakt
A consistent theory of optimal subband coding of zero mean wide-sense cyclostationary signals, with N-periodic statistics, is presented in this article. An M-channel orthonormal uniform filter bank, employing N-periodic analysis and synthesis filters, is used while an average variance condition is applied to evaluate the output distortion. In three lemmas and final theorem, the necessity of decorrelation of blocked subband signals and requirement of specific ordering of power spectral densities are proven.
Klíčová slova
coding gain, decimation, filter bank, polyphase representation, power spectral density matrix, multirate system, decorrelationsubbabd codingTrvalý odkaz
http://hdl.handle.net/11012/58226Typ dokumentu
Recenzovaný dokumentVerze dokumentu
Finální verze PDFZdrojový dokument
Radioengineering. 2000, vol. 9, č. 2, s. 5-9. ISSN 1210-2512http://www.radioeng.cz/fulltexts/2000/00_02_05_09.pdf
Kolekce
- 2000/2 [6]