Simple Design of Detector in the Presence of Frequency Offset for IEEE 802.15.4 LR-WPANs

Author

Park, Daesik ; Park, Chester Sungchung ; Lee, Kwyro

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon

Volume

56

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

330

Lastpage

334

Abstract

A simple detector for orthogonal modulation that is robust to large frequency offsets is proposed. The complexity of the detector is significantly reduced by implementing the correlator using multiplexers instead of complex floating-point multiplications. The performance of this design is comparable to the optimal value obtained by double correlation in offset quadrature phase-shift keying (O-QPSK) and nearly reaches that of noncoherent maximum likelihood (NCOHML) detection with 10-ppm frequency offset in the additive white Gaussian noise (AWGN) channel. Therefore, the proposed design can be used in low-cost and low-power IEEE 802.15.4 low-rate wireless personal area network (LR-WPAN) applications.

Keywords

AWGN channels; personal area networks; quadrature phase shift keying; ZigBee; additive white Gaussian noise channel; double correlation; floating-point multiplications; frequency offset; low-rate wireless personal area network; noncoherent maximum likelihood detection; offset quadrature phase-shift keying; Double correlation; IEEE 802.15.4; ZigBee; frequency offset; noncoherent detection; offset quadrature phase-shift keying (O-QPSK);

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2009.2015384

Filename

4803793