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DMWT (Seri B) dayanarak DMT-ADSL BER Azaltma

BER Reduction for DMT-ADSL Based on DMWT (Series B)

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Abstract (2. Language): 
Discrete multi-tone (DMT) modulation is an orthogonal frequency division multiplexing (OFDM) based modulation scheme used in asymmetrical digital subscriber line (ADSL) and proposed for various other high-speed broadband access systems. To enhance the bit error rate (BER) for the DMT-ADSL, a discrete multi-wavelet transform (DMWT) model is proposed. The performance of standard and proposed models is sim¬ulated using Matlab software under the additive white Gaussian noise (AWGN) channel effect. The effect of impulse random bit location noise was also taken into our simula¬tion. The simulation results show that the proposed model based on DMWT technique outperforms the standard model in terms of BER.
Abstract (Original Language): 
Ayrık çoklu-tonlamalı (DMT) modülasyon, asimetrik dijital abone hatlarında kullanılan bir dik frekans bölmeli çogullama (OFMD) modülasyon modelidir ve diger hızlı genis bantlı erisim sistemleri için de önerilmektedir. DMT-ADSL'in bit hata oranını (BER) gelistirmek icin bir ayrık coklu-dalgacık donüsüm (DMWT) modeli onerilmistir. Standart model ve onerilen modelin performansları toplanabilir beyaz Gauss gürültülü (AWGN) kanal etkisi altında Matlab yazılımı kullanılarak simule edilmistir. Ayrıca, rasgele darbe bit konum gurültü etkisi de simulasyonumuza alınmıstır. Simulasyon sonuçları, DMWT teknigine dayanan modelin BER açısından standart modelden daha yuksek seviyede performans gosterdiğini ortaya koymustur.
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