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A simplified computational kernel for trellis-based decoding
DOI:10.1109/LCOMM.2004.825743.png)
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
IF:
4.4
论文数:
1.3W
被引数:
2.2W
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