Effect of Underwater Ambient Noise on Quadraphase Phase-shift Keying Acoustic Sensor Network Links in Extremely Low Frequency Band
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-30-7_007
تاریخ نمایه سازی: 23 دی 1396
Abstract:
This study evaluates the impact of underwater ambient noise using seven real noise samples; Dolphin, Rain, Ferry, Sonar, Bubbles, Lightning, and Outboard Motor in three frequency ranges in extremely low frequency (ELF) band. The ELF band is the most significant bandwidth for underwater long-range communication. ELF band which is extended from 3 to 3000 Hz clearly, faces bandwidth limitation. Measuring the impact of noises that are imposed on this bandwidth, based on center frequency employment is highly regarded. This measurement optimizes detection process and assists the design of more reliable underwater communication systems and will improve network quality of service (QoS). In this investigation, Quadraphase Phase-shift Keying (QPSK) acoustic communication nodes are designed in MATLAB and real noise samples are added to network link. Three frequency bands are defined (0-1600), (400-2000) and (1600-3200) Hz, then the impact of noise samples on phase is measured. Next, (
Keywords:
Underwater Sensor Network , Underwater Ambient Noise , Phase-Shifting Measurement , Underwater Channel Estimation , Acoustic Quadraphase Phase-shift Keying , Link
Authors
n Bahrami
Department of Electrical Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Malaysia
n.h Haji Khamis
Department of Electrical Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Malaysia
a Yahya
Department of Electrical Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Malaysia
a Baharom
Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia