Multiple Symbol Differential Detection Scheme for IEEE 802.15.4 BPSK Receivers

Gaoyuan ZHANG; Hong WEN; Longye WANG; Xiaoli ZENG; Jie TANG; Runfa LIAO; Liang SONG

doi:10.1587/transfun.E101.A.1975

Regular Section

Multiple Symbol Differential Detection Scheme for IEEE 802.15.4 BPSK Receivers

Gaoyuan ZHANG, Hong WEN, Longye WANG, Xiaoli ZENG, Jie TANG, Runfa LIAO, Liang SONG

Author information

Gaoyuan ZHANG
School of Electronic and Information Engineering, Henan University of Science and Technology
National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China
Hong WEN
National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China
Longye WANG
School of Engineering and Technology, Tibet University
Xiaoli ZENG
School of Information Science and Technology, Tibet University
Jie TANG
National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China
Runfa LIAO
National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China
Liang SONG
School of Electronic and Information Engineering, Henan University of Science and Technology

Keywords: multiple symbol differential detection, first-order differential modulation, frequency offset estimation and compensation, IEEE 802.15.4 BPSK receiver

JOURNAL RESTRICTED ACCESS

2018 Volume E101.A Issue 11 Pages 1975-1979

DOI https://doi.org/10.1587/transfun.E101.A.1975

Details

Abstract

A simple and novel multiple-symbol differential detection (MSDD) scheme is proposed for IEEE 802.15.4 binary phase shift keying (BPSK) receivers. The detection is initiated by estimating and compensating the carrier frequency offset (CFO) effect in the chip sample of interest. With these new statistics, the decisions are jointly made by allowing the observation window length to be longer than two bit intervals. Simulation results demonstrate that detection reliability of the IEEE 802.15.4 BPSK receivers is significantly improved. Namely, at packet error rate (PER) of 1×10^-3, the signal-to-noise ratio (SNR) gap between ideal coherent detection (perfect carrier reference phase and no CFO) with differential decoding and conventional optimal single differential coherent detection (SDCD) is filled by 2.1dB when the observation window length is set to 6bit intervals. Then, the benefit that less energy consumed by retransmissions is successfully achieved.

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