TEK TAŞIYICILI WİMAX (IEEE 802.16-2004) RADYODA TAŞIYICI FREKANS KAYMASINI İZLEME BAŞARIMININ DENEYSEL OLARAK İNCELENMESİ

Yıl 2011, Cilt: 26 Sayı: 3, 0 - , 20.02.2013

Mehmet İlkhan Ahmet Canbolat Ali Özen

Öz

Bu makalede, gerçek zaman WiMAX (IEEE 802.16-2004) radyo kanallarında klasik uyarlanır denkleştirmealgoritmalarının taşıyıcı frekans kaymasını (carrier frequency offset, CFO) izleme başarımları simülasyon vedeneysel olarak değerlendirilmektedir. Belirli bir kanal profilini kullanma yerine bu çalışma 3,5 GHz WiMAXradyo çalışma bölgesinde frekans seçici Rayleigh sönümlemeli gerçek kanallar üzerine odaklanmaktadır.Çalışmada, en çok kullanılan denkleştirme teknikleri; en küçük ortalama kareler karar geri beslemelidenkleştirici (Least Mean Squares Decision Feedback Equalizer, LMS-DFE) ve öz yinelemeli en küçük karelerDFE (Recursive Least Squares, RLS-DFE) algoritmalarının bit hata oranı (Bit Error Rate, BER) başarımlarıincelenmektedir. Benzetim sonuçları simülasyon ve deneysel başarımların birbirleriyle son derece uyumlu vegayet tatmin edici olduğunu göstermektedir.

Anahtar Kelimeler

Deneysel BER, uyarlanır denkleştirme, WiMAX (IEEE 802.16-2004), CFO, LMS-DFE, RLS-DFE.

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