In this paper we compare the performance of biorthogonal cosinemodulated transmultiplexer filter banks with today’s multicarrier modulation systems whose transceivers are based on DFT. In contrast to early works on transmultiplexer filter banks that concentrated on the derivation of perfect reconstruction constraints of the filter bank or prototype design, this study takes into consideration a ...

Vaidyanathan suggested the use of filter banks with coefficients in finite fields as stream ciphers. We show how to break those ciphers. A more general class of ciphers is introduced, which includes many well-known block ciphers, like DES, IDEA, etc. These ciphers are derived from filter banks over group rings.

We introduce a framework for treating multirate filter banks for signal and image processing applications, as well as communication applications, in a unified way. We show how methods from group and ring theory can be applied to derive structural properties of filter banks.

Recently, there has k e n a growing interest in investigating signal-adaptive multirate filter banks. I n this paper, we propose a direct method of constructing signal-adaptive orthogonal wavelet filter banks with better energy compaction performance than that of Daubechies wavelet filters of same length. 'The speed of this method is fast. so i t can be constructed in real time.

This paper discusses a method of designing linear phase two-channel filter banks for integer wavelet transform. We show that the designed filter banks are easily structed as the lifting form by leading relationship between designed filters and lifting structure. The designed integer wavelets are applied to image compression to verify the efficiency of our method. key words: JPEG2000, integer wa...

A technique for mapping systolic FIR filter banks onto fixed-size processor arrays is presented. It is based on the time-sharing properties of c-slow circuits. The technique can be further developed to a formalism and holds high potential for automatic realization. It has been applied to the mapping of systolic filter banks onto a fixed-size array of Transputers.

1 We introduce the fundamentals of cyclic multirate systems and filter banks and present a number of important differences between the cyclic and noncyclic (traditional) cases. Some of the additional freedom offered by cyclic systems is pointed out, and a number of open issues are summarized.

The use of a paraunitary lter bank for image processing requires a special treatment at image boundaries to ensure perfect reconstruction and orthogonality of these regions. Using time-varying boundary lter banks, we will discuss a procedure that explores all degrees of freedom of the border lters in a method essentially independent of signal extensions, allowing us to design optimal boundary l...