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Journals / Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji / 2016 / Cilt: 4 - Sayı: 2

Bit Error Rate Performance Analyses of DS-CDMA Systems for Different Spreading Codes in Weibull Fading Channels

DD-KBÇE İletişim Sistemlerinin Farklı Yayma Kodları İçin Weibull Sönümlü Kanaldaki Bit Hata Oranı Başarım Analizleri

Yasin KABALCI
Pages
31–39
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

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

Performed simulation results for different user numbers are confirmed that Walsh-Hadamard spreading codes outperform than the Gold codes in the event of increasing user numbers.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Wireless communication systems are one of the most dynamic areas of contemporary research and development areas.
📊
Key Findings & Data:In this study, the bit error rate (BER) performances of the DS-CDMA systems are investigated over Weibull fading channel model that is proposed as an appropriate fading model to describe multipath fading channels for both indoor and outdoor environments.
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Conclusion & Impact:Performed simulation results for different user numbers are confirmed that Walsh-Hadamard spreading codes outperform than the Gold codes in the event of increasing user numbers.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Wireless communication systems are one of the most dynamic areas of contemporary research and development areas. In recent years, one of the most popular wireless technologies is direct-sequence code division multiple access (DS-CDMA) systems. In this study, the bit error rate (BER) performances of the DS-CDMA systems are investigated over Weibull fading channel model that is proposed as an appropriate fading model to describe multipath fading channels for both indoor and outdoor environments. The BER performances of communication systems are obtained for both by employing two different spreading codes such as Gold and Walsh-Hadamard codes, and by varying the value of fading parameters of the Weibull channel model. Performed simulation results for different user numbers are confirmed that Walsh-Hadamard spreading codes outperform than the Gold codes in the event of increasing user numbers.

Özet

Kablosuz iletişim sistemleri günümüz araştırma ve geliştirme alanlarının en dinamik olanlarından birisidir. Son yıllarda çok popüler olan kablosuz iletişim teknolojilerinden birisi doğrudan dizili kod bölmeli çoklu erişim (DDKBÇE) sistemidir. Bu çalışmada DD-KBÇE iletişim sistemlerinin bit hata oranı (BHO) başarımları, bina içi ve bina dışı ortamlarda çok yollu yayılıma sahip sönümlemeli kanalların tanımlanabilmesi için önerilmiş uygun bir istatistiksel model olan Weibull sönümlü kanallar üzerinden analiz edilmiştir. İletişim sistemlerinin BHO başarımları hem Gold ve Walsh-Hadamard kodları gibi iki farklı yayma kodu kullanılarak hem de Weibull sönümlenmeli kanalın sönümleme parametreleri değiştirilerek elde edilmiştir. Farklı kullanıcı sayıları için gerçekleştirilen başarım analizleri sonucunda Walsh-Hadamard yayma kodlarının artan kullanıcı sayılarında Gold kodlarından oldukça üstün oldukları görülmüştür.

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Cite This Article

KABALCI, Y. (2022). Bit Error Rate Performance Analyses of DS-CDMA Systems for Different Spreading Codes in Weibull Fading Channels. Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji, Cilt: 4 - Sayı: 2, 31–39. https://ajindex.com/articles/522256

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