'Forward link' diaporamas de présentation

Satellite Interactive Terminal

909 views • 61 slides

CDMA Technologies for Cellular Phone System

CDMA Technologies for Cellular Phone System. July 7th, 2004 Takashi INOUE KDDI R&D Laboratories Inc. Contents. Introduction Spread Spectrum Technology DS-CDMA Spreading Codes Features of CDMA RAKE Receiver Power Control Frequency Allocation Soft Handoff Conclusion.

809 views • 48 slides

Outline

Outline. Introduction Background Activities in TSG-C WG3 EMAH for performance evaluation of UMB system Calibration process among companies Simulation conditions for UMB performance evaluation Simulation results Conclusion Appendix: Examples of link level simulation results

447 views • 30 slides

CDMA Technologies for Cellular Phone System

Week 16 Lecture 1. CDMA Technologies for Cellular Phone System. 3rd. Generation (2000s). 2nd. Generation (1990s). Digital. 1st.Generation (1980s). GSM DECT DCS1800 CT2 PDC PHS IS-54 IS-95 IS-136 UP-PCS. Analog. NMT CT0 TACS CT1 AMPS. Evolution of Cellular Systems.

451 views • 28 slides

Outline

Outline. Introduction Background Activities in TSG-C WG3 EMAH for performance evaluation of UMB system Calibration process among companies Simulation conditions for UMB performance evaluation Simulation results Conclusion Appendix: Examples of link level simulation results

396 views • 28 slides

Space-Based IP Testing Using COTS Equipment

Space-Based IP Testing Using COTS Equipment. Will Ivancic - NASA GRC Terry Bell - Lockheed Martin Global Telecommunications Dan Shell - Cisco System. Space-Based IP Testing Agenda. Goals Network Topology Network Setup STS Interfaces and Links Test Results Conclusions Recommendations.

408 views • 21 slides

Call admission control (JABA-SD = MBA-SD)

Call admission control (JABA-SD = MBA-SD). May 14, 2002 ? ? ?. Outline. Introduction CAC Review JABA-SD, MBA-SD Formulation of the burst admission control Measurement Sub-Layer Scheduling Sub-layer Optimal Solution Implementation issue Result Considerations Reference. Review.

390 views • 17 slides

COP 3538 Data Structures with OOP

336 views • 16 slides

Over-the-Air VoIP Issues and Recommended Phases

Over-the-Air VoIP Issues and Recommended Phases. Raymond Hsu Tao Chen Joe Odenwalder Ed Tiedemann. Outline. Identify issues concerning VoIP over the air IP/UDP/RTP header compression Link layer overhead Capacity loss QoS Recommendation Phasing approach to VoIP over the air

251 views • 15 slides

CDMA2000 1x Rev E: Power Control Improvement

CDMA2000 1x Rev E: Power Control Improvement. VIA Telecom. Outline. Power Control Modifications When no traffic in Reverse Link RL Smart Blanking is enabled. Disable the transmission of invalid PCBs in FL When no traffic in Forward Link

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Soft Handoff

Soft Handoff. Soft handoff for MC 1X and DS works as in IS-95-B Soft handoff for MC 3X is a straightforward extension of that in MC 1X E c /I 0 used is the sum of the E c /I 0 on all three carriers. Inter-Frequency Hard Handoff.

422 views • 11 slides

GSC-13

GSC-13 . Ground-Based Air Traffic Management Equipment and Air-to-Ground Communications. Submission Date: July 16, 2008. Air Traffic Management (ATM).

201 views • 8 slides