Bit-Stream Signal Processing Circuits and Their Application
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概要
- 論文の詳細を見る
A digital circuit technique is proposed to process directly bit-stream signals from analog-to-digital converters based on sigma-delta modulation. Newly developed adder and multiplier are fundamental circuit modules for the processing. Using the fundamental modules and up/down counters, other circuit modules such as divider and square root circuits are also realized. The signal processors built of the modules have advantages over multi-bit Nyquist rate processors in circuit scale by the following two distinct features: First, single-bit/multi-bit converters are not needed at the inputs of the processors because the arithmetic modules directly process bit-stream signals. Secondly, the arithmetic modules consist of small number of logic gates. As an application of the technique to digital signal processing for communications, a QPSK demodulator is presented. The demodulator is structured with 40% of logic gates consumed by an equivalent multi-bit demodulator.
- 社団法人電子情報通信学会の論文
- 2002-04-01
著者
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Morisue M
Hiroshima City Univ. Hiroshima‐shi Jpn
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Morisue Mititada
Faculty Of Engineering Saitama University
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Fujisaka H
Hiroshima City Univ. Hiroshima‐shi Jpn
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Fujisaka Hisato
Faculty Of Information Sciences Hiroshima City University
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SAKAMOTO Masahiro
Faculty of Information Sciences, Hiroshima City University
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Sakamoto Masahiro
Faculty Of Information Sciences Hiroshima City University
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Fujisaka Hisato
Faculty of Information Science, Hiroshima City University
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- FOREWORD
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