The investigation of new adaptive filtering algorithms for telecommunications echo cancellation implemented in TMS32010 fixed point assembly code

Michael N. Kloos, W. Kenneth Jenkins

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Current state-of-the art echo cancellers for telecommunications typically employ the least mean square (LMS) adaptive algorithm developed in the late 1950's and early 1960's. The canceller is usually implemented as a nonrecursive, or finite impulse response (FIR), filter structure. More recently, interest has grown in recursive, or infinite impulse response (IIR), adaptive filter structures for the echo cancellation application. Floating-point computer simulations have shown that adaptive IIR filters require less computation to match certain transfer relations than do adaptive FIR filters. However, it is a practical question as to how well these algorithms perform when implemented in a fixed-point environment, which is typically the case in practical situations. This paper examines the performance of several IIR adaptive filtering algorithms as implemented on a Texas Instruments TMS32010 digital signal processor for echo cancellation in telecommunication environments.

Original languageEnglish (US)
Title of host publicationMidwest Symposium on Circuits and Systems
PublisherPubl by IEEE
Pages1034-1037
Number of pages4
Volume2
ISBN (Print)0780300815
StatePublished - 1991
Event33rd Midwest Symposium on Circuits and Systems - Calgary, Alberta, Can
Duration: Aug 12 1990Aug 15 1990

Other

Other33rd Midwest Symposium on Circuits and Systems
CityCalgary, Alberta, Can
Period8/12/908/15/90

Fingerprint

Echo suppression
Adaptive filtering
Adaptive filters
Telecommunication
FIR filters
Impulse response
IIR filters
Digital signal processors
Adaptive algorithms
Computer simulation

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Kloos, M. N., & Jenkins, W. K. (1991). The investigation of new adaptive filtering algorithms for telecommunications echo cancellation implemented in TMS32010 fixed point assembly code. In Midwest Symposium on Circuits and Systems (Vol. 2, pp. 1034-1037). Publ by IEEE.
Kloos, Michael N. ; Jenkins, W. Kenneth. / The investigation of new adaptive filtering algorithms for telecommunications echo cancellation implemented in TMS32010 fixed point assembly code. Midwest Symposium on Circuits and Systems. Vol. 2 Publ by IEEE, 1991. pp. 1034-1037
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Kloos, MN & Jenkins, WK 1991, The investigation of new adaptive filtering algorithms for telecommunications echo cancellation implemented in TMS32010 fixed point assembly code. in Midwest Symposium on Circuits and Systems. vol. 2, Publ by IEEE, pp. 1034-1037, 33rd Midwest Symposium on Circuits and Systems, Calgary, Alberta, Can, 8/12/90.

The investigation of new adaptive filtering algorithms for telecommunications echo cancellation implemented in TMS32010 fixed point assembly code. / Kloos, Michael N.; Jenkins, W. Kenneth.

Midwest Symposium on Circuits and Systems. Vol. 2 Publ by IEEE, 1991. p. 1034-1037.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kloos MN, Jenkins WK. The investigation of new adaptive filtering algorithms for telecommunications echo cancellation implemented in TMS32010 fixed point assembly code. In Midwest Symposium on Circuits and Systems. Vol. 2. Publ by IEEE. 1991. p. 1034-1037