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Link Budget Analysis for 40-50GHz Indoor Usage

Link Budget Analysis for 40-50GHz Indoor Usage. Authors:. Date: 2014-01-23. Link budget analysis is the fundamental metric for communication system design. Introduction. Propagation Loss Model and Shadowing. Link Budget TX power: Tx_power =10dBm;

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Link Budget Analysis for 40-50GHz Indoor Usage

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  1. Link Budget Analysis for 40-50GHz Indoor Usage Authors: Date: 2014-01-23 Jianhan Liu, Mediatek Inc.

  2. Link budget analysis is the fundamental metric for communication system design Introduction Jianhan Liu, Mediatek Inc.

  3. Propagation Loss Model and Shadowing Jianhan Liu, Mediatek Inc.

  4. Link Budget • TX power: Tx_power=10dBm; • Propagation Loss at 1 m: PL= 32.5+10*log10(45) =65.6dB • Shadowing +link Margin: 3*s • Rx signal Strength : Rx_power=Tx_power+Gt+Gr-PL-3*s • Rx Noise Figure: Rx_NF=10dB • Implementation loss=2dB • Noise Floor for 1GHz channel: N=-174+10*log10(1e9)=-84dBm • Rx SNR: RX_SNR= Rx_power –N-Rx_NF-Implementation loss Link Budget Jianhan Liu, Mediatek Inc.

  5. Link Budget for LOS case Jianhan Liu, Mediatek Inc.

  6. Link Budget for NLOS case Jianhan Liu, Mediatek Inc.

  7. Link budget analysis shows that without certain antenna gain provided by beamforming, 45GHz system can not work. Recommendation: Beamforming is required for 45GHz indoor usage if the system needs to work for 10meter NLOS. Summary and Recommendations Jianhan Liu, Mediatek Inc.

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