Hybrid ARQ with ratio threshold combining for frequency-hop communication systems

Author

Block, Fred J. ; Baum, Carl W.

Author_Institution

Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA

fYear

1997

fDate

12-14 Apr 1997

Firstpage

281

Lastpage

283

Abstract

In channels affected by strong interference, the throughput of frequency-hop spread-spectrum communication systems employing hybrid automatic repeat request protocols can be unacceptably low. We show that significant improvements in throughput can be achieved by combining symbols between the different transmissions. Several symbol combining techniques based on Viterbi´s ratio threshold test are proposed and are shown to provide significant improvements in performance

Keywords

Viterbi detection; automatic repeat request; error correction codes; error detection codes; frequency hop communication; protocols; radiofrequency interference; spread spectrum communication; telecommunication channels; Viterbi ratio threshold test; frequency hop spread spectrum communication; hybrid ARQ; hybrid automatic repeat request protocols; interference; performance; ratio threshold combining; telecommunication channels; throughput; Additive noise; Automatic repeat request; Decoding; Envelope detectors; Error correction codes; Frequency; Interference; Testing; Throughput; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '97. Engineering new New Century., Proceedings. IEEE

Conference_Location

Blacksburg, VA

Print_ISBN

0-7803-3844-8

Type

conf

DOI

10.1109/SECON.1997.598691

Filename

598691