A study on the performance, power consumption tradeoffs of short frame turbo decoder design

Z. Chi, Z. Wang, Keshab K Parhi

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

Protecting short frames using turbo coding is a challenging task because of the small interleave size and the need for transmission efficiency. In this paper, we explore possible trade-off between power consumption (estimated by the average number of iterations) and performance of turbo decoders when short frame turbo codes are used. Three encoding/decoding schemes are proposed to improve performance of turbo decoder in terms of frame/bit error rate, and to increase the data transmission efficiency whether ARQ protocols are performed or not. Specifically, turbo decoding metrics aided short CRC codes are applied to terminated trellis codes, tail-biting encoded trellis codes and CRC embedded trellis codes with a two-fold purpose: to stop the iterative decoding processes and to detect decoding errors at the last iteration. We show that significant coding gains can be achieved by actually increasing the coding rate with negligible increase in power consumption. Performance improvement is demonstrated over both AWGN and Rayleigh flat fading channels.

Original languageEnglish (US)
Pages (from-to)2637-2640
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume4
StatePublished - Sep 26 2001
Event2001 IEEE Interntional Conference on Acoustics, Speech, and Signal Processing - Salt Lake, UT, United States
Duration: May 7 2001May 11 2001

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