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Efficient Implementations of Complex and Real Valued Filter Banks for Comparative Subband Processing with an Application to Adaptive Filtering (301kB)

Efficient Implementations of Complex and Real Valued Filter Banks for Comparative Subband Processing with an Application to Adaptive Filtering (301kB)
Efficient Implementations of Complex and Real Valued Filter Banks for Comparative Subband Processing with an Application to Adaptive Filtering (301kB)
In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.
32-35
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476
Lampe, L
7c513a47-5390-4958-a9f8-abe9e0f4117f
Stewart, R W
c819965d-70b4-4689-8206-e6e444dcbf8e
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476
Lampe, L
7c513a47-5390-4958-a9f8-abe9e0f4117f
Stewart, R W
c819965d-70b4-4689-8206-e6e444dcbf8e

Weiss, S, Lampe, L and Stewart, R W (1998) Efficient Implementations of Complex and Real Valued Filter Banks for Comparative Subband Processing with an Application to Adaptive Filtering (301kB). Proc. 1st International Symposium on Communication Systems and Digital Signal Processing. pp. 32-35 .

Record type: Conference or Workshop Item (Other)

Abstract

In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.

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More information

Published date: April 1998
Additional Information: Organisation: CSDSP'98 Address: Sheffield, UK
Venue - Dates: Proc. 1st International Symposium on Communication Systems and Digital Signal Processing, 1998-04-01
Organisations: Electronics & Computer Science

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Local EPrints ID: 251913
URI: http://eprints.soton.ac.uk/id/eprint/251913
PURE UUID: 6c361a3e-6e4a-4d49-966c-724e81e7b550

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Date deposited: 08 Nov 2000
Last modified: 16 Dec 2019 20:47

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