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Outdoor Channel Models for 802.11af

Outdoor Channel Models for 802.11af. Authors:. Date: 2012-03-14. Abstract. In this presentation, we discuss the channel models of VHF/UHF band for the range of about 0.1 to 15km for urban/sub-urban area to assist corresponding system design and be used for performance evaluation.

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Outdoor Channel Models for 802.11af

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  1. Alina Liru Lu, NICT Outdoor Channel Models for 802.11af Authors: • Date: 2012-03-14

  2. Alina Liru Lu, NICT Abstract • In this presentation, we discuss the channel models of VHF/UHF band for the range of about 0.1 to 15km for urban/sub-urban area to assist corresponding system design and be used for performance evaluation.

  3. Alina Liru Lu, NICT Proposed Channel Models • The following three aspects will be covered in this presentation • RMS Delay Spread • Path Loss Model • Channel Impulse Response Profile to assist the PHY/MAC design, link budget calculation, system level simulation and data link simulation

  4. Alina Liru Lu, NICT Table 1 RMS Delay Spread Measure frequency 200MHz Hb=45m Hm=2m BS Power 20W Table 2 [2] Table 1 shows the calculated RMS Delay Spread based on VHF band measurement results for Japan Public broadband network [1].The average RMS delay spread highly depends on the environment such as terrain type. [1] M. OODO, N. SOMA, R. FUNADA and H. HARADA, “Channel Model for Broadband Wireless Communication in the VHF-band”, IEICE Technical Report

  5. RMS Delay Spread Avg RMS delay 8.83µs Avg RMS delay 10.9µs Avg RMS delay 1.52µs Worse case RMS delay can have a major impact on system performance. RMS delay spread highly depends on the environment instead of distance Alina Liru Lu, NICT

  6. Alina Liru Lu, NICT RMS Delay Spread [2] Worse case RMS delay can have a major impact on system performance, it has better to consider worse case scenario during system design. [2] Theodore S. Rappaport, Wireless Communications: Principles and Practice (2nd Edition), Prentice Hall, ISBN: 0130422320 Publish Date: Dec 31, 2007

  7. Alina Liru Lu, NICT Path Loss Model Revised Hata model is recommended based on the above comparison [3] M. Hata, “Empirical formula for propagation loss in land mobile radio services,” IEEE Trans. Vehicular Technol., vol. 29, pp. 317–325, Aug. 1980. [4] ERC Report 68, “Monte-Carlo Simulation Methodology for the Use in Sharing and Compatibility Studies Between Different Radio Services or systems” [5] ITU-R, “Method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 3000 MHz,” Recommendation ITU-R P.1546-4, Oct. 2009. [6] ITU-R, “A path-specific propagation prediction method for point-to-area terrestrial services in the VHF and UHF bands,” Recommendation ITU-R P. P.1812-1, Oct. 2009.

  8. Alina Liru Lu, NICT Channel Impulse Response Model [1] [1] M. OODO, N. SOMA, R. FUNADA and H. HARADA, “Channel Model for Broadband Wireless Communication in the VHF-band”, IEICE Technical Report

  9. Alina Liru Lu, NICT Summary • The presentation proposes channel models for medium to long range TV White Space communications. • The proposed Channel Models covers • RMS Delay Spread • Path Loss Model • Channel Impulse Response Profile • The proposed models can be considered to use for the design and simulation of TV White space communications system with communication ranges of about 0.1 to15km.

  10. Alina Liru Lu, NICT References [1] M. OODO, N. SOMA, R. FUNADA and H. HARADA, “Channel Model for Broadband Wireless Communication in the VHF-band”, IEICE Technical Report • [2] Theodore S. Rappaport, Wireless Communications: Principles and Practice (2nd Edition), Prentice Hall, ISBN: 0130422320 Publish Date: Dec 31, 2007 [3] M. Hata, “Empirical formula for propagation loss in land mobile radio services,” IEEE Trans. Veh. Technol., vol. 29, pp. 317–325, Aug. 1980. [4] ERC Report 68, “Monte-Carlo Simulation Methodology for the Use in Sharing and Compatibility Studies Between Different Radio Services or systems” [5] ITU-R, “Method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 3000 MHz,” Recommendation ITU-R P.1546-4, Oct. 2009. [6] ITU-R, “A path-specific propagation prediction method for point-to-area terrestrial services in the VHF and UHF bands,” Recommendation ITU-R P. P.1812-1, Oct. 2009.

  11. Alina Liru Lu, NICT Appendix

  12. Alina Liru Lu, NICT Revised Hata Model Formulas for calculation of Median Path Loss

  13. Alina Liru Lu, NICT Revised Hata Model(Cont. 1)

  14. Alina Liru Lu, NICT Revised Hata Model (Cont. 2)

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