Spectrum Efficiency Metrics



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Spectrum Efficiency Metrics

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Sharing Work Group*

Technological Advisory Council

Version 1.0 – 20 December 2011



Table of Contents



Executive Summary 2

I.Introduction 5

II.Summary of Prior Work 6

III.Proposed Taxonomy and Focus 7

IV.Spectrum Efficiency Metrics for Satellite Systems 9

1Communication Satellite Systems 11

1.1Broadcast Systems 11

1.2Point-to-point Systems 11

2Additional Efficiency Considerations 12

2.1Antenna Size 12

2.2Consumed Field of View for Geostationary Satellite Systems 12

2.3Consumed Orbital Arc for Geostationary Satellite Systems 12

2.4Consumed Geographic Regions for Non-geostationary Satellite Systems 13

2.5Responsiveness for Two-way Point-to-point Satellite Systems 13

3Non-communication Satellite Systems 13

4Concluding Thoughts on Metrics for Satellite Systems 14

V.Spectrum Efficiency Metrics for Terrestrial Systems 14

1 Terrestrial Communications Systems 15

1.1Terrestrial Broadcast Systems 15

1.2 Personal Communications Systems 16

1.3 Point-to-Point Terrestrial Systems 17

1.4 Hybrid Terrestrial Systems – Public Safety / Utility 17

VI.Further Thoughts Relating to Spectrum Efficiency Metrics 19

1Factors Impacting the Amount of Spectrum Consumed by a System 19

2Allocation Efficiency and Spectrum Sharing 21

3Case Studies Illustrating the Importance of Receiver Performance 22

VII.Summary and Conclusions 22

Appendix A: Spectrum Efficiency Metrics -- Taxonomy 25

Appendix B: Examples of Spectrum Sharing in the US 27

Appendix C: Case Studies - The Role of Receiver Performance In Promoting Efficient Use of the Spectrum 31





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