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A simplified computational kernel for trellis-based decoding

delete2004-03-01
delete5
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OA
AI
M
Matthias Kamuf
J
John B. Anderson
Ö
Öwall, V
DOI:10.1109/LCOMM.2004.825743delete
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摘要

摘要

En 中文
A simplified branch metric and add-compare-select (ACS) unit is presented for use in trellis-based decoding architectures. The simplification is based on a complementary property of best feedforward and some systematic feedback encoders. As a result, one adder is saved in every other ACS unit. Furthermore, only half the branch metrics have to be calculated. It is shown that this simplification becomes especially beneficial for rate 1/2 convolutional codes. Consequently, area and power consumption will be reduced in a hardware implementation.
Keyword:
add-compare-select (ACS)
branch metric
logMAP
very large-scale integration (VLSI)
Viterbi decoding

期刊

IEEE Communications Letters 封面图
IEEE Communications Letters
IF:
4.4
论文数:
1.3W
被引数:
2.2W

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