Point-Point Fixed Wireless and Broadcasting Services Coexistence With Imt-Advanced System

Shamsan, Zaid A.; Rahman, Tharek Bin Abdul; Al-hetar, Abdulaziz M.

doi:10.2528/pier11090305

Cited by 13 publications

(20 citation statements)

References 13 publications

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“…Also in [23], three empirical path loss models, i.e., ITU-R P.1546-3, Hata and ETRI (Electronic Telecommunication Research Institute) models were used to calculate propagation distances for safe operation of TETRA system on DTV white space. In [33] ITU-R model is used to address spectrum sharing issues between IMT-advanced, fixed wireless systems (FWS) and TV broadcast service. In the work, the path loss model was used to investigate inter system interference between Wimax, FWS and mutual coexistence between them.…”

Section: Related Workmentioning

confidence: 99%

On the Study of Empirical Path Loss Models for Accurate Prediction of Tv Signal for Secondary Users

Фарук¹,

Ayeni²,

Adediran³

2013

PIER B

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Abstract-Demand for wireless communication technologies and systems keep increasing and has reached the peak where the capacity can only be achieved by improving spectrum utilization. The spectrum allocated to TV broadcast systems can be shared by wireless data services through exploiting spatial reuse opportunities (Spatial TV white space).Path loss models are used extensively in signal prediction, coverage optimization and interference analysis. Recently it is being used in estimating distances for safe operation of secondary users in TV white space. Peculiarities of these models give rise to high prediction errors when deployed in a different environment other than the one initially built for. It is however not very clear which model gives the best fit and what the penalties are for using the models outside the intended coverage area. In this paper, we assess the fitness of nine empirical widely used path loss models using five novel metrics to gauge their performance. In order to achieve this, field strength measurements were conducted in the VHF and UHF regions along six different routes that spanned through the urban, suburban and rural areas of Kwara State, Nigeria. A program was developed in VB 6.0 language to compute the path losses for the empirical models. The measurement results were converted to path losses and are compared with the model's prediction. The results show that no single model provides a good fit consistently. However, Hata and Davidson models provide good fitness along some selected routes with measured RMSE values of less than 10 dB. ITU-R P.1546-4, Walfisch Ikegami (WI), Egli, CCIR and FSPL perform woefully, with higher RMSE and SC-RMSE (Spread Corrected RMSE) values. Further analysis on the error spread as a function of distance along 60 km route revealed that Hata and Davidson models show symmetry up to about 30 km with slight divergence between 24 km and 30 km after which Davidson model gives lower prediction error along the route. The prediction errors for Davidson model distributes nearly symmetrically around the mean error of 2.15 dB. It is noteworthy that the Gaussian error distribution within the window of ±5 dB dominates the frequency counts. However, the error counts for CCIR model closely follow normal distribution with a mean error of −6.37 dB but Hata, FSPL, Walfisch Ikegami and ITU-R P. 529-3 models do not follow normal distribution curve.

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Section: Related Workmentioning

confidence: 99%

On the Study of Empirical Path Loss Models for Accurate Prediction of Tv Signal for Secondary Users

Фарук¹,

Ayeni²,

Adediran³

2013

PIER B

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“…(dBm) shows the interference power where ( ) shows the variation between carriers of interferer and victim. C is a correction factor defined in two different values in two different situations [16] as follow: if the bandwidth of interferer (HAPS) is less than the bandwidth of the victim (FS) then C has a value of 0 dB; else, C is calculated from (2):…”

Section: Interference and Noise Calculationsmentioning

confidence: 99%

Spectrum Sharing Model for Coexistence between High Altitude Platform System and Fixed Services at 5.8 GHz

Mokayef¹,

Rahman²,

Ngah³

et al. 2013

IJMUE

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This paper sheds the light on coexistence and sharing between high altitude platform system (HAPS) and Fixed Services (FS) as a recently critical issue due to the spectrum shortage. International Telecommunications Union Radiocommunications sector (ITU-R) allocated the 5850-7075 MHz band for the operation of HAPS along with existing FS services. Therefore, coexistence and sharing requirements like separation distance and frequency separation coordination must be achieved in terms of both co-channel and adjacent channel frequencies. The interference analysis mode based on the spectrum emission mask (SEM) is applied in the mentioned band to extract the required frequency separation to protect adjacent channel interference. Also interference to noise ratio (INR) as standard interference criteria is utilized.

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“…LTE-Advanced uses carrier aggregation of multiple component carriers of Orthogonal Frequency Division Multiplexing (OFDM) technique to achieve high bandwidth transmission [3]. This technique is supposed to support high data rate of 100 Mbit/s and 1 Gbit/s for high and low mobility, respectively, within a wide range of frequency bands [4, 5]. …”

Section: Introductionmentioning

confidence: 99%

An Improved Mathematical Scheme for LTE-Advanced Coexistence with FM Broadcasting Service

Shamsan

Al-hetar

2016

PLoS ONE

Self Cite

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Power spectral density (PSD) overlapping analysis is considered the surest approach to evaluate feasibility of compatibility between wireless communication systems. In this paper, a new closed-form for the Interference Signal Power Attenuation (ISPA) is mathematically derived to evaluate interference caused from Orthogonal Frequency Division Multiplexing (OFDM)-based Long Term Evolution (LTE)-Advanced into Frequency Modulation (FM) broadcasting service. In this scheme, ISPA loss due to PSD overlapping of both OFDM-based LTE-Advanced and FM broadcasting service is computed. The proposed model can estimate power attenuation loss more precisely than the Advanced Minimum Coupling Loss (A-MCL) and approximate-ISPA methods. Numerical results demonstrate that the interference power is less than that obtained using the A-MCL and approximate ISPA methods by 2.8 and 1.5 dB at the co-channel and by 5.2 and 2.2 dB at the adjacent channel with null guard band, respectively. The outperformance of this scheme over the other methods leads to more diminishing in the required physical distance between the two systems which ultimately supports efficient use of the radio frequency spectrum.

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Point-Point Fixed Wireless and Broadcasting Services Coexistence With Imt-Advanced System

Cited by 13 publications

References 13 publications

On the Study of Empirical Path Loss Models for Accurate Prediction of Tv Signal for Secondary Users

On the Study of Empirical Path Loss Models for Accurate Prediction of Tv Signal for Secondary Users

Spectrum Sharing Model for Coexistence between High Altitude Platform System and Fixed Services at 5.8 GHz

An Improved Mathematical Scheme for LTE-Advanced Coexistence with FM Broadcasting Service

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