Journals / Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi / 2020 / Cilt: 7 - Sayı: 1

The Effect of Multipath on Bandwidth, Capacity and Transmission Power in Underwater Communication

Sualtı Haberleşmede Çok Yolluluğun Bant Genişliği, Kapasite ve İletim Gücü Üzerindeki Etkisi

Pages
404–420
Publication Date
2020-06-28
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As a result of the analysis, it was found that the number of multipath signals reaching the receiver from the source, the level of the bottom/surface reflection attenuation, and the distance between the source-receiver directly affect the bandwidth, capacity and transmission power.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Advances in communication technologies for the underwater environment have led to the emergence of new underwater acoustic communication techniques.
📊
Key Findings & Data:Thus, the studies for transmitting data at high bandwidths and long distances in the underwater environment have increased.
💡
Conclusion & Impact:As a result of the analysis, it was found that the number of multipath signals reaching the receiver from the source, the level of the bottom/surface reflection attenuation, and the distance between the source-receiver directly affect the bandwidth, capacity and transmission power.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Underwater Acoustics · Bandwidth · Capacity

Abstract

Advances in communication technologies for the underwater environment have led to the emergence of new underwater acoustic communication techniques. In parallel with these developments, with the development of material and sensor technologies, these technologies have become feasible. Thus, the studies for transmitting data at high bandwidths and long distances in the underwater environment have increased. The chaotic nature of the underwater environment makes it difficult to transmit data from the source to the receiver. Low frequencies are preferred in underwater communication studies because the systems designed to operate at high frequencies cannot be transmitted to long distances at high frequencies and have limited bandwidth. Communication between two points directly affects bandwidth, source transmission power, and source-receiver distance. In the environment where the communication will be carried out, the signals emitted from the source are received as multi-way in the sensor. Especially reflections from the surface and bottom cause the signals received in the sensor to be distorted. In this study, using the transmission loss, absorption loss, and ambient noise models proposed in the literature in the underwater environment, bandwidth, capacity, and transmission power calculations were performed. In calculations, the effects of the different number of multipath signals reaching the receiver from the source, the different dip/surface reflection attenuation to which the multipath signals are exposed, and the distance between the source-receiver on the bandwidth, capacity, and transmission power were analyzed. As a result of the analysis, it was found that the number of multipath signals reaching the receiver from the source, the level of the bottom/surface reflection attenuation, and the distance between the source-receiver directly affect the bandwidth, capacity and transmission power.

Özet

Sualtı ortamına yönelik haberleşme teknolojilerindeki gelişmeler, yeni sualtı akustik iletişim tekniklerinin ortaya çıkmasını sağlamıştır. Bu gelişmelere paralel olarak malzeme ve algılayıcı teknolojilerinin de gelişmeleri ile birlikte, bu teknolojiler uygulanabilir hale gelmiştir. Böylece sualtı ortamında yüksek bant genişliklerinde, uzak mesafelere veri iletimine yönelik çalışmalar artmıştır. Sualtı ortamının kaotik yapısı, kaynaktan alıcıya veri iletimini zor hale getirmektedir. Sualtında yüksek frekanslarda uzak mesafelere iletim gerçekleştirilememesi ve yüksek frekanslarda çalışacak şekilde tasarlanan sistemlerin sınırlı bant genişliğine sahip olması nedeni ile sualtı haberleşmeye yönelik çalışmalarda düşük frekanslar tercih edilmektedir. İki nokta arasında gerçekleştirilecek iletişim bant genişliğinden, kaynak iletim gücünden ve kaynak-alıcı arası mesafeden doğrudan etkilemektedir. İletişimin gerçekleştirileceği ortamda kaynaktan yayılan sinyaller algılayıcıda çok yollu olarak alınmaktadır. Özellikle yüzeyden ve dipten yansımalar, algılayıcıda alınan sinyallerin bozulmasına sebep olmaktadır. Bu çalışma kapsamında, sualtı ortamında literatürde önerilen iletim kaybı, emilim kaybı ve ortam gürültüsü modelleri kullanılarak bant genişliği, kapasite ve iletim gücü hesapları gerçekleştirilmiştir. Hesaplamalarda kaynaktan alıcıya ulaşan farklı sayıda çok yollu sinyaller, çok yollu sinyallerin maruz kaldığı farklı dip/yüzey yansıma zayıflamalarının ve kaynak alıcı arası mesafenin bant genişliği, kapasite ve iletim gücü üzerindeki etkisi analiz edilmiştir. Analizler sonucunda kaynaktan alıcıya ulaşan çok yollu sinyallerin sayısının, dip/yüzey yansıma zayıflamalarının seviyesinin ve kaynak alıcı arasındaki mesafenin bant genişliği, kapasite ve iletim gücünü doğrudan etkilediği görülmüştür.

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Cite This Article

ÇAVUŞLU, M. A., ALTUNCU, M., ÖZCAN, H., GÜLAĞIZ, F. K., ŞAHİN, S. (2020). The Effect of Multipath on Bandwidth, Capacity and Transmission Power in Underwater Communication. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi, Cilt: 7 - Sayı: 1, 404–420. https://ajindex.com/articles/251572

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