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http://dx.doi.org/10.7471/ikeee.2018.22.3.800

DQPSK OFDM-Based HF-Band Communication System with Individual Subcarrier  

Choi, Sung-Cheol (Special Department, SAMYUNG ENC Co., Ltd.)
Kim, Jeong-Nyun (Fishery Info-Communication System, National Federation of Fisheries Cooperatives)
Park, Hyung Chul (Dept. of Electronic and IT Media Eng., Seoul National University of Science and Technology)
Publication Information
Journal of IKEEE / v.22, no.3, 2018 , pp. 800-804 More about this Journal
Abstract
This paper presents a novel HF band differential quadrature phase-shift keying (DQPSK) orthogonal frequency-division multiplexing (OFDM) communication system. The system can deliver 3.6 kbps with a bandwidth of about 3 kHz. In a digital modem, OFDM with 32-point fast Fourier transform is used. In the system, each subcarrier uses DQPSK modulation. Hence, a demodulator does not require carrier phase recovery and symbol timing recovery. And, each subcarrier employs CRC error check code individually. By using CRC code for each subcarrier, bit error caused by multipath fading can be recovered simply.
Keywords
OFDM; HF; DQPSK; maritime communication; e-Navigation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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