Minimum redundancy for ISI free FIR filterbank transceivers
Journal
IEEE Transactions on Signal Processing
Journal Volume
50
Journal Issue
4
Pages
842-853
Date Issued
2002
Author(s)
Lin, Y.-P.
Abstract
There has been great interest in the design of filterbank transceivers. Usually, with proper time domain equalization, the channel is modeled as an FIR filter. It is known that for FIR channels, the introduction of certain redundancy allows the receiver to cancel intersymbol interference (ISI) completely, and channel equalization is performed implicitly using FIR transceivers. This scheme allows us to trade bandwidth for ISI cancellation. In this paper, we will derive the minimum redundancy required for the existence of FIR transceivers for a given channel. We will see that the minimum redundancy is directly related to the zeros of the channel and to the Smith form of an appropriately defined channel matrix.
Other Subjects
Filterbank transceivers; Communication channels (information theory); Interference suppression; Intersymbol interference; Matrix algebra; Redundancy; Time domain analysis; Transceivers; FIR filters
Type
journal article