抄録
This paper proposes a new fully-digitalized π/4-shift QPSK modulator consisting of a digital pulse shaping filter and a baseband quadrature modulator. By employing a novel digital filter configuration, the required filter memory is reduced to just 6.25% of the conventional one. Moreover, since the proposed baseband modulation scheme does not employ analog mixers or an analog 90° divider, a very accurate, high-stable and compact modulator is realized. It is shown that the proposed scheme achieves excellent low power consumption characteristics and is more suitable for digital LSIC implementation of personal communication terminals than a direct RF modulation scheme and an analog IF modulation scheme.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 921-926 |
| ページ数 | 6 |
| ジャーナル | IEICE Transactions on Communications |
| 巻 | E77-B |
| 発行部数 | 7 |
| 出版物ステータス | Published - 1994 7 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering
これを引用
New fully-digitalized π/4-shift QPSK modulator for personal communication terminals. / Sakata, Tetsu; Seki, Kazuhiko; Kubota, Shuji; Kato, Shuzo.
：: IEICE Transactions on Communications, 巻 E77-B, 番号 7, 07.1994, p. 921-926.研究成果: Article
}
TY - JOUR
T1 - New fully-digitalized π/4-shift QPSK modulator for personal communication terminals
AU - Sakata, Tetsu
AU - Seki, Kazuhiko
AU - Kubota, Shuji
AU - Kato, Shuzo
PY - 1994/7
Y1 - 1994/7
N2 - This paper proposes a new fully-digitalized π/4-shift QPSK modulator consisting of a digital pulse shaping filter and a baseband quadrature modulator. By employing a novel digital filter configuration, the required filter memory is reduced to just 6.25% of the conventional one. Moreover, since the proposed baseband modulation scheme does not employ analog mixers or an analog 90° divider, a very accurate, high-stable and compact modulator is realized. It is shown that the proposed scheme achieves excellent low power consumption characteristics and is more suitable for digital LSIC implementation of personal communication terminals than a direct RF modulation scheme and an analog IF modulation scheme.
AB - This paper proposes a new fully-digitalized π/4-shift QPSK modulator consisting of a digital pulse shaping filter and a baseband quadrature modulator. By employing a novel digital filter configuration, the required filter memory is reduced to just 6.25% of the conventional one. Moreover, since the proposed baseband modulation scheme does not employ analog mixers or an analog 90° divider, a very accurate, high-stable and compact modulator is realized. It is shown that the proposed scheme achieves excellent low power consumption characteristics and is more suitable for digital LSIC implementation of personal communication terminals than a direct RF modulation scheme and an analog IF modulation scheme.
UR - http://www.scopus.com/inward/record.url?scp=0028461232&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028461232&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0028461232
VL - E77-B
SP - 921
EP - 926
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
SN - 0916-8516
IS - 7
ER -