Performance bounds for turbo coded half duplex relay systems

Subhadeep Roy, Tolga M. Duman

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

8 Scopus citations

Abstract

We develop performance bounds for half duplex relay systems operating in decode-forward mode over additive white Gaussian noise (AWGN) channels. We consider the distributed turbo coding scheme [1] where the relay decodes the information obtained from the source, interleaves, re-encodes and forwards it to the destination. Unlike most other half duplex schemes proposed in the literature where the source remains silent during the relay transmission, the source and the relay in our scheme are allowed to transmit simultaneously in the same frequency band, in order to improve the overall spectral efficiency of the system. We employ the union bound on the average error probability for the general case of imperfect source to relay link assuming uniform interleaving at the source and the relay. We compare the bound with the simulation results obtained by the iterative decoding algorithm of [1] and show that for relatively large signal to noise ratios and large interleaver sizes the performance of the iterative algorithm is close to that predicted by the bound. The bounds are not restricted to turbo codes alone, i.e, they can be applied to other linear block codes including LDPC codes as well.

Original languageEnglish (US)
Title of host publication2006 IEEE International Conference on Communications, ICC 2006
Pages1586-1591
Number of pages6
DOIs
StatePublished - Dec 1 2006
Event2006 IEEE International Conference on Communications, ICC 2006 - Istanbul, Turkey
Duration: Jul 11 2006Jul 15 2006

Publication series

NameIEEE International Conference on Communications
Volume4
ISSN (Print)0536-1486

Other

Other2006 IEEE International Conference on Communications, ICC 2006
CountryTurkey
CityIstanbul
Period7/11/067/15/06

    Fingerprint

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Roy, S., & Duman, T. M. (2006). Performance bounds for turbo coded half duplex relay systems. In 2006 IEEE International Conference on Communications, ICC 2006 (pp. 1586-1591). [4024378] (IEEE International Conference on Communications; Vol. 4). https://doi.org/10.1109/ICC.2006.255037