ANALYSIS OF LARGE-SCALE PATH LOSS MODEL AT 33 GHZ IN INDOOR LABORATORY ENVIRONMENT

Abstract

In this study, two important large-scale path loss models, which are Close-In (CI) model with free space reference distance and Float Intercept (FI) model, were compared in indoor laboratory scenario for fifth-generation (5G) radio systems. Comparisons are conducted using a ray-tracing-based simulation environment at ten different measurement points, at 33 GHz center frequency, and distances between 1,5 to 9 m. According to the results obtained, the one-parameter CI model is simpler and more consistent than the two-parameter FI model. CI model offers better simulation accuracy, greater simplicity, and better iterability between experiments, besides better adaptation to both line-of-sight and non-line-of-sight conditions. In addition, the CI model exhibit high stability at wide frequency ranges.

Keywords

• 33 GHz
• large-scale path loss model
• CI model
• FI model
• indoor laboratory environment

BİNA-İÇİ LABORATUVAR ORTAMINDA 33 GHZ'DE BÜYÜK ÖLÇEKLİ YOL KAYBI ANALİZİ

Abstract

Bu çalışmada, beşinci nesil (5G) radyo sistemleri için bina-içi laboratuvar ortamında iki önemli geniş ölçekli yol kaybı modeli karşılaştırılmıştır. Bu modeller, yakın mesafe (YM) referans modeli ve kayan kesme (KK) modelidir. Ölçümler ışın izleme temelli bir simülasyon programı ile 10 farklı noktada, 33 GHz merkez frekansında yapılmıştır. Verici ile alıcı arasındaki mesafe 1,5 ila 9 m arasında değişmektedir. Elde edilen sonuçlar göstermektedir ki, bir parametreli YM modeli, iki parametreli KK modelinden daha basit ve daha tutarlıdır. YM modeli, verici ile alıcı arasında görüş hattı olan ve olmayan koşullara daha iyi adaptasyon sağlayabilmektedir. Ayrıca ölçümler sırasında daha iyi simülasyon doğruluğu, daha fazla basitlik ve tekrarlanabilirlik sağlamaktadır. Bunların yanı sıra YM modeli geniş frekans aralıklarında yüksek kararlılık sergileyebilmektedir.

Keywords

• 33 GHz
• geniş ölçekli yol kaybı modeli
• bina-içi laboratuvar ortamı
• kayan kesme (KK) modeli
• yakın mesafe (YM) modeli

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