Open AccessUse of first‐ and second‐order sigma–delta quantisers in context of odd‐stacked cosine modulated filter banks
Author(s) -
Abdelkefi F.,
Ayadi J.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.0803
Subject(s) - context (archaeology) , order (exchange) , sigma , trigonometric functions , filter (signal processing) , delta sigma modulation , filter bank , computer science , mathematics , telecommunications , electronic engineering , physics , engineering , electrical engineering , business , bandwidth (computing) , geology , geometry , paleontology , quantum mechanics , finance
The use of sigma–delta (ΣΔ) quantisers in the context of an oversampled odd‐stacked cosine modulated filter bank (CMFB) is investigated. Shown is that the exploitation of the ΣΔ quantisers jointly with the CMFB ensures significant robustness of the transmitted signal against transmission errors. In this context, an upper bound of the minimum squares error of the reconstructed signal is derived and it is proved that it decreases as (1/ r 2 ), where r denotes the CMFB frame redundancy, for the first‐ and the second‐order ΣΔ quantisers.