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Link Budget Model Satellite: Measat-2 Tx: Kuching 2.4-meter Rx: Rawang 11-meter Data Rate: 512 Kbps Carrier: SCPC, QPSK, FEC ½, RS Modem: RC/DMD-2401.

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Presentation on theme: "Link Budget Model Satellite: Measat-2 Tx: Kuching 2.4-meter Rx: Rawang 11-meter Data Rate: 512 Kbps Carrier: SCPC, QPSK, FEC ½, RS Modem: RC/DMD-2401."— Presentation transcript:

1 Link Budget Model Satellite: Measat-2 Tx: Kuching 2.4-meter Rx: Rawang 11-meter Data Rate: 512 Kbps Carrier: SCPC, QPSK, FEC ½, RS Modem: RC/DMD-2401

2 Maxis East Malaysia Interoffice LinkMaxis Confidential Restricted2 Up Link – Kuching 2.4-m Vapour density: 15 Surface temp: 32 Ant eff, gain: +42, 65% (Prodelin) Prodelin 2.4: +42 (65%) Prodelin 1.8: (65%) NEC 11: NEC 7.6: Coupling loss: 0.5 (E/S: 1; VSAT: 0.5) Antenna mispointing: 0.5 (E/S: ; VSAT: ) C/ACI: 20 (typical) C/ASI: 18 (typical) C/XPI: 30 (typical) HPA C/IM: 30 (typical)

3 Maxis East Malaysia Interoffice LinkMaxis Confidential Restricted3 Down Link – Rawang 11-m Vapour density: 15 Surface Temp: 32 Ant eff, gain: Prodelin 2.4: +38 (65%) Prodelin 1.8: (65%) NEC 11: NEC 7.6: Coupling loss: 0.5 (E/S: 1; VSAT: 0.5) Antenna mispointing: 0.1 (E/S: ; VSAT: ) LNB noise fig: +42 (NEC) Others: Antenna noise temp: 27 NEC: 27; Prodelin: 45 C/ASI: 18 (typical) C/ACI: 20 (typical) C/XPI: 30 (typical)

4 Maxis East Malaysia Interoffice LinkMaxis Confidential Restricted4 Rain Model – ITU P-zone ITU-R Recommendation PN.837[5]

5 Maxis East Malaysia Interoffice LinkMaxis Confidential Restricted5 Measat-2 Parameters G/T receive dB/K: 0.10 [Kuching](NEC) SFD dBW/m2: [Kuching] Attenuator setting: 6 (M2-2C: 6; M2-3: 4) EIRP (saturation): 38.5 [Rawang] Transponder Bandwidth: 72 [Measat-2] Transponder IBO: 6 [Measat-2] Transponder OBO: 4 [Measat-2] C/IM: 18.4 [Measat-2]

6 Maxis East Malaysia Interoffice LinkMaxis Confidential Restricted6 Carriers & Modulation Required Eb/No: 6.5 [Reed Solomon] Overhead: 1% - 5% Radyne=1/15 (Asyn) 1+Roll off factor: 1.2 Carrier spacing factor: 1.2 BW allocation step: System margin: 1 Operator Parameter: RS code: 126/112 Modulation: QPSK FEC: 1/2 Transponder Power Usage: Under use is checked when the ODU has limited power (5W) Eb/No: = 7.5 dB


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