A Half-Chip Offset QPSK Modulation CDMA Scheme Employing Differential Detection for Advanced Wireless LAN Systems

Takatoshi SUGIYAMA; Masato MIZOGUCHI; Shuji KUBOTA

A Half-Chip Offset QPSK Modulation CDMA Scheme Employing Differential Detection for Advanced Wireless LAN Systems

Takatoshi SUGIYAMA, Masato MIZOGUCHI, Shuji KUBOTA

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This paper proposes a half-chip offset QPSK (Quadrature Phase Shift Keying) modulation CDMA (Code Division Multiple Access) scheme to allow the simple differential detection while realizing a compact spectrum in nonlinear channels for wireless LAN systems. The experimental results show the proposed scheme achieves excellent Pe (probability of error) performances in ACI (adjacent channel interference) and CCI (co-channel interference) environments. Moreover, by employing time diversity and high-coding-gain FEC (Forward Error Correction), the half-chip offset QPSK-CDMA scheme realizes an improvement of 3.0 dB (in terms of Eb/No at a Pe of 10⁵) in Rician fading environments with a Doppler frequency fD of 10 Hz and a delay spread of 40 nsec.

Publication: IEICE TRANSACTIONS on Communications Vol.E79-B No.5 pp.693-700

Publication Date: 1996/05/25

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Type of Manuscript: PAPER

Category: Radio Communication

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Takatoshi SUGIYAMA, Masato MIZOGUCHI, Shuji KUBOTA, "A Half-Chip Offset QPSK Modulation CDMA Scheme Employing Differential Detection for Advanced Wireless LAN Systems" in IEICE TRANSACTIONS on Communications, vol. E79-B, no. 5, pp. 693-700, May 1996, doi: .
Abstract: This paper proposes a half-chip offset QPSK (Quadrature Phase Shift Keying) modulation CDMA (Code Division Multiple Access) scheme to allow the simple differential detection while realizing a compact spectrum in nonlinear channels for wireless LAN systems. The experimental results show the proposed scheme achieves excellent Pe (probability of error) performances in ACI (adjacent channel interference) and CCI (co-channel interference) environments. Moreover, by employing time diversity and high-coding-gain FEC (Forward Error Correction), the half-chip offset QPSK-CDMA scheme realizes an improvement of 3.0 dB (in terms of Eb/No at a Pe of 10⁵) in Rician fading environments with a Doppler frequency fD of 10 Hz and a delay spread of 40 nsec.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e79-b_5_693/_p

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@ARTICLE{e79-b_5_693,
author={Takatoshi SUGIYAMA, Masato MIZOGUCHI, Shuji KUBOTA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Half-Chip Offset QPSK Modulation CDMA Scheme Employing Differential Detection for Advanced Wireless LAN Systems},
year={1996},
volume={E79-B},
number={5},
pages={693-700},
abstract={This paper proposes a half-chip offset QPSK (Quadrature Phase Shift Keying) modulation CDMA (Code Division Multiple Access) scheme to allow the simple differential detection while realizing a compact spectrum in nonlinear channels for wireless LAN systems. The experimental results show the proposed scheme achieves excellent Pe (probability of error) performances in ACI (adjacent channel interference) and CCI (co-channel interference) environments. Moreover, by employing time diversity and high-coding-gain FEC (Forward Error Correction), the half-chip offset QPSK-CDMA scheme realizes an improvement of 3.0 dB (in terms of Eb/No at a Pe of 10⁵) in Rician fading environments with a Doppler frequency fD of 10 Hz and a delay spread of 40 nsec.},
keywords={},
doi={},
ISSN={},
month={May},}

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TY - JOUR
TI - A Half-Chip Offset QPSK Modulation CDMA Scheme Employing Differential Detection for Advanced Wireless LAN Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 693
EP - 700
AU - Takatoshi SUGIYAMA
AU - Masato MIZOGUCHI
AU - Shuji KUBOTA
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E79-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 1996
AB - This paper proposes a half-chip offset QPSK (Quadrature Phase Shift Keying) modulation CDMA (Code Division Multiple Access) scheme to allow the simple differential detection while realizing a compact spectrum in nonlinear channels for wireless LAN systems. The experimental results show the proposed scheme achieves excellent Pe (probability of error) performances in ACI (adjacent channel interference) and CCI (co-channel interference) environments. Moreover, by employing time diversity and high-coding-gain FEC (Forward Error Correction), the half-chip offset QPSK-CDMA scheme realizes an improvement of 3.0 dB (in terms of Eb/No at a Pe of 10⁵) in Rician fading environments with a Doppler frequency fD of 10 Hz and a delay spread of 40 nsec.
ER -