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IEEE 802.16m CASE STUDY CHANNEL MODEL

IEEE 802.16m CASE STUDY CHANNEL MODEL. Siddharth Nair G200901750 EE 578 04/12/10. Introduction. Link Level Channel Model Large Scale & Small Scale Fading Characteristics. Spatial Channel Modeling. Ray Based Each Tap a Summation Of Rays at each time instant

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IEEE 802.16m CASE STUDY CHANNEL MODEL

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  1. IEEE 802.16mCASE STUDYCHANNEL MODEL Siddharth Nair G200901750 EE 578 04/12/10

  2. Introduction • Link Level Channel Model • Large Scale & Small Scale Fading Characteristics

  3. Spatial Channel Modeling • Ray Based • Each Tap a Summation Of Rays at each time instant • Channel Coefficients Dependent on • Antenna Configuration • Gain Pattern • AoA, AoD • Correlation Based • Mandatory Baseline Channel Modeling Approach • Antenna Correlation Based On • AoA, AoD, Angular Profile, Antenna Configuration • Provides Both Spatial and Temporal Correlation(Doppler)

  4. Radio Environments • Urban Macrocell – Manhattan Type Grid • Suburban Macrocell– Low Residential Detached Houses • Urban Microcell – Height Of Both BS And MS Well Below Surrounding Buildings • Indoor Small Office • Outdoor To Indoor– Combination Of Any Of The Outdoor/Indoor Scenarios • Indoor Hotspots – Conference Halls, Shopping Malls • Open Rural Macrocell – Low Building Density

  5. Large Scale Path Loss With Shadowing F = 4GHz • COST-231 Modified Hata Model Used

  6. No Shadowing

  7. Small Scale Fading • Cluster Delay Line Model Used • CDL Model seen as an extension to Tap Delay Line Model • Each Cluster a Group of Multipath components whose Large scale characteristics do not change relative to each other • AoA, AoD • Per Tap Power • Delays

  8. CDL Model –MIMO

  9. Spatial Correlation Calculation CorrelationP, Q Antennae Angular Offset

  10. Urban Macrocell NLOS Channel

  11. Input • Fs = 20e6 Hz • Fd = 0 Hz • Ts = 1/Fs • Nt = 2 • Nr = 2

  12. Impulse Response

  13. Frequency Response

  14. Fd=350 Hz

  15. Urban NLOS Microcell

  16. Input • Fs = 20e6 Hz • Fd = 0 Hz • Ts = 1/Fs • Nt = 2 • Nr = 2

  17. Impulse Response

  18. Frequency Response

  19. THANK YOU !!QUESTIONS AND COMMENTS SIDDHARTH NAIR G200901750 EE-DEPT- KFUPM

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