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Improved interleaver design for turbo coded intersymbol interference channels

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3 Author(s)
N. Ehtiati ; Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada ; A. Ghrayeb ; M. R. Soleymani

We consider an improved S-random interleaver design for the serial concatenation of a high rate punctured convolutional code and a precoded intersymbol interference (ISI) channel separated by an interleaver. We first identify the error patterns that dominate the performance in the floor region. We then modify the S-random interleaver design such that the dominant weight-2 error patterns are eliminated. Simulation results indicate that a performance improvement of about 0.4 dB at a probability of error of about 10-6 is possible. More investigation, however, is still required in order to understand the effect of the new design on the distance spectrum corresponding to higher weight patterns.

Published in:

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th  (Volume:1 )

Date of Conference:

6-9 Oct. 2003