Very low rate trellis/Reed-Muller (TRM) codes

Very low rate trellis/Reed-Muller (TRM) codes

This paper considers a technique for very low rate channel coding. The main application for such codes is in spread-spectrum systems where significant bandwidth spreading is possible. New, very low rate binary channel codes based on a combination of a trellis code with a first-order Reed-Muller bloc...

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Veröffentlicht in:IEEE transactions on communications 1999-10, Vol.47 (10), p.1476-1487
Hauptverfasser: Chaib, J.-P., Leib, H.
Format: Artikel
Sprache:eng
Schlagworte:
AWGN
Bandwidth
Block codes
Channel coding
Channels
Coding
Construction
Convolutional codes
Error correction
Error correction codes
Gain
Shift registers
Spread spectrum communication
Spreading
Transmission line measurements
Trellis codes
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Zusammenfassung:This paper considers a technique for very low rate channel coding. The main application for such codes is in spread-spectrum systems where significant bandwidth spreading is possible. New, very low rate binary channel codes based on a combination of a trellis code with a first-order Reed-Muller block code (trellis/Reed-Muller (TRM) codes) are presented. The construction technique for TRM codes, which is considered in this paper, is related to Kerdock (1972) codes. It is shown that these TRM codes provide a better tradeoff between rate and gain than other existing very low rate codes, such as the orthogonal or superorthogonal convolutional codes, and the IS-95 uplink code. Due to their improved performance, TRM codes can significantly increase the bandwidth efficiency of spread-spectrum multiple-access systems.
ISSN:0090-6778
1558-0857
DOI:10.1109/26.795816