Abstract
This paper presents a very low power consumption one-chip baseband large-scale integrated circuit (LSIC) for personal communication terminals. It comprises a π/4-shift QPSK modem, an adaptive differential pulse code modulation (ADPCM) codec, a time division multiple access time division duplex (TDMA-TDD) controller and a link access procedure for a digital cordless (LAPDC: Layer-2 protocol) controller. The developed LSIC meets all the specifications of the personal handy-phone system (PHS) standard. By employing a novel coherent demodulator and an ADPCM codec with a click noise suppressor, a higher-quality voice transmission has been achieved in a fading environment. In addition, it has 64-kb/s data transmission capability to achieve wireless multimedia services based on PHS. Moreover, the novel circuit configurations of the modem, the ADPCM codec, the TDMA-TDD controller, and the LAPDC controller achieve significant power reduction of the baseband circuits (57.4 mW) of personal communication terminals. It enables very low power consumption wireless multimedia terminals to be achieved based on the PHS common air interface.
| Original language | English |
|---|---|
| Pages (from-to) | 687-696 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Very Large Scale Integration (VLSI) Systems |
| Volume | 6 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1998 |
| Externally published | Yes |
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Keywords
- Adaptive differential pulse code modulation (ADPCM) codec
- Demodulator
- Modulator
- Personal communication
- Personal handyphone system (PHS)
- Protocol controller
- Time division multiple access time division duplex (TDMA-TDD) controller
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Hardware and Architecture
Cite this
Low-power and high-quality signal transmission baseband LSIC for personal communications. / Kobayashi, Kiyoshi; Kubota, Shuji; Enomoto, Kiyoshi; Seki, Kazuhiko; Kawazoe, Katsuhiko; Sakata, Tetsu; Matsumoto, Yoichi; Hattori, Takeshi.
In: IEEE Transactions on Very Large Scale Integration (VLSI) Systems, Vol. 6, No. 4, 1998, p. 687-696.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Low-power and high-quality signal transmission baseband LSIC for personal communications
AU - Kobayashi, Kiyoshi
AU - Kubota, Shuji
AU - Enomoto, Kiyoshi
AU - Seki, Kazuhiko
AU - Kawazoe, Katsuhiko
AU - Sakata, Tetsu
AU - Matsumoto, Yoichi
AU - Hattori, Takeshi
PY - 1998
Y1 - 1998
N2 - This paper presents a very low power consumption one-chip baseband large-scale integrated circuit (LSIC) for personal communication terminals. It comprises a π/4-shift QPSK modem, an adaptive differential pulse code modulation (ADPCM) codec, a time division multiple access time division duplex (TDMA-TDD) controller and a link access procedure for a digital cordless (LAPDC: Layer-2 protocol) controller. The developed LSIC meets all the specifications of the personal handy-phone system (PHS) standard. By employing a novel coherent demodulator and an ADPCM codec with a click noise suppressor, a higher-quality voice transmission has been achieved in a fading environment. In addition, it has 64-kb/s data transmission capability to achieve wireless multimedia services based on PHS. Moreover, the novel circuit configurations of the modem, the ADPCM codec, the TDMA-TDD controller, and the LAPDC controller achieve significant power reduction of the baseband circuits (57.4 mW) of personal communication terminals. It enables very low power consumption wireless multimedia terminals to be achieved based on the PHS common air interface.
AB - This paper presents a very low power consumption one-chip baseband large-scale integrated circuit (LSIC) for personal communication terminals. It comprises a π/4-shift QPSK modem, an adaptive differential pulse code modulation (ADPCM) codec, a time division multiple access time division duplex (TDMA-TDD) controller and a link access procedure for a digital cordless (LAPDC: Layer-2 protocol) controller. The developed LSIC meets all the specifications of the personal handy-phone system (PHS) standard. By employing a novel coherent demodulator and an ADPCM codec with a click noise suppressor, a higher-quality voice transmission has been achieved in a fading environment. In addition, it has 64-kb/s data transmission capability to achieve wireless multimedia services based on PHS. Moreover, the novel circuit configurations of the modem, the ADPCM codec, the TDMA-TDD controller, and the LAPDC controller achieve significant power reduction of the baseband circuits (57.4 mW) of personal communication terminals. It enables very low power consumption wireless multimedia terminals to be achieved based on the PHS common air interface.
KW - Adaptive differential pulse code modulation (ADPCM) codec
KW - Demodulator
KW - Modulator
KW - Personal communication
KW - Personal handyphone system (PHS)
KW - Protocol controller
KW - Time division multiple access time division duplex (TDMA-TDD) controller
UR - http://www.scopus.com/inward/record.url?scp=0032297224&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032297224&partnerID=8YFLogxK
U2 - 10.1109/92.736142
DO - 10.1109/92.736142
M3 - Article
VL - 6
SP - 687
EP - 696
JO - IEEE Transactions on Very Large Scale Integration (VLSI) Systems
JF - IEEE Transactions on Very Large Scale Integration (VLSI) Systems
SN - 1063-8210
IS - 4
ER -