Energy-efficient turbo decoder

Jagadeesh Kaza, Chaitali Chakrabarti

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

6 Citations (Scopus)

Abstract

Turbo codes have been recently adopted in the next generation of wideband CDMA standards. These codes achieve superior performance at the expense of high computational complexity. This makes their low energy implementation a very important yet challenging problem. In this paper we study the effect of different approximation techniques such as pruning the trellis, reducing the number of states, sliding window, early termination on the Bit Error Rate (BER) and energy consumption for a Turbo decoder implemented on a general purpose processor. We show that a combination of these techniques can result in 66.5% energy reduction for a log-MAP based Turbo decoder if a loss of 1.4 dB in SNR can be tolerated at BER = 10 -5.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume3
StatePublished - 2002
Event2002 IEEE International Conference on Acoustic, Speech, and Signal Processing - Orlando, FL, United States
Duration: May 13 2002May 17 2002

Other

Other2002 IEEE International Conference on Acoustic, Speech, and Signal Processing
CountryUnited States
CityOrlando, FL
Period5/13/025/17/02

Fingerprint

decoders
bit error rate
Bit error rate
Turbo codes
code division multiple access
energy consumption
Code division multiple access
central processing units
sliding
Computational complexity
Energy utilization
broadband
energy
approximation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics

Cite this

Kaza, J., & Chakrabarti, C. (2002). Energy-efficient turbo decoder. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (Vol. 3)

Energy-efficient turbo decoder. / Kaza, Jagadeesh; Chakrabarti, Chaitali.

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 3 2002.

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

Kaza, J & Chakrabarti, C 2002, Energy-efficient turbo decoder. in ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. vol. 3, 2002 IEEE International Conference on Acoustic, Speech, and Signal Processing, Orlando, FL, United States, 5/13/02.
Kaza J, Chakrabarti C. Energy-efficient turbo decoder. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 3. 2002
Kaza, Jagadeesh ; Chakrabarti, Chaitali. / Energy-efficient turbo decoder. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 3 2002.
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