Performance analysis of empirical path loss models in VHF & UHF bands

Abstract

In this work, signal path loss prediction from nine different empirical path loss models were statistically compared with those measured from four television transmitters along five routes that span through urban and rural environments of Osun State, Nigeria. In this respect, results obtained show that both Hata and Davidson prediction models provide best fit prediction consistently along the five measurement routes with 90% to 98% prediction accuracy, Ilorin, CCIR, Cost 231, Ericsson 9999 and ECC-33 show prediction accuracy within the range of 65% to 80% while SUI and Okumura models offer prediction accuracy within the range of 15% to 21%. Generally the results show that Davidson and Hata models have better results in all the five routes examined. SUI and Okumura models show the least performance results.

Analisa Path Loss Spektrum Frekuensi UHF Untuk Penyiaran TV Terestrial Kota Padang

“…Tinggi antena pemancar diperhitungakn dengan nilai 10 m, 20 m, 37.5 m, 75 m, 150m, 300 m, 600 m, 1200 m dan di atas 1200 m. Interpolasi dan ekstrapolasinya menggunakan persamaan (6) E = Einf + (Esup-Einf)*log(h1 / hinf) /log(hsup / hinf) (6) dimana, E = Kuat medan yang diterima Einf = Kuat medan tinggi antena pemancar bawah Esup = Kuat medan tinggi antena pemancar atas h1 = Tinggi antena pemancar yang dihitung hinf = Tinggi antena pemancar bawah hsup = Tinggi antena pemancar atas Interpolasi dan ekstrapolasi dilakukan terhadap parameter frekuensi dan ketinggian antena pemancar seperti yang dapat dilihat pada persamaan 6. Interpolasi dilakukan untuk parameter pertama, parameter selanjutnya dengan menggunakan ektrapolasi dari data yang didapatkan pada parameter pertama.…”

Analisa Path Loss Spektrum Frekuensi UHF Untuk Penyiaran TV Terestrial Kota Padang

“…Beberapa penelitian menggunakan rekomndasi ITU-R P.1546 untuk memprediksi besarnya redaman tersebut [1][2][3][4]. Selain rekomendasi tersebut beberapa metode juga digunakan sebagai pembanding [5][6][7].…”

Large-scale radio propagation path loss measurements and predictions in the VHF and UHF bands

“…Some popular and widely cited models are the Hata (1980) ; COST 231 ( Faruk et al, 2014 ) and Egli models ( Egli, 1957 ). Even though they are practically popular ( Popoola and OSeni, 2014 ); ( Faruk et al, 2013a ), it has been found that most of these models do not reflect the dynamic variation of the signal level, thus, giving high prediction errors when tested in different terrain environments other than the ones they were initially built for ( Jimoh et al, 2015b , Surajudeen-Bakinde et al, 2018 , Faruk et al, 2017 , Phillips et al, 2012 , Jimoh et al, 2015a ). Moreover, significant path loss data are needed to come-up with a robust empirical model with sets of correction factors, as measurements needed to be conducted in several environments and across bands, capturing both local terrain and clutter information, which have been found to be relatively expensive.…”