CONTENTS

Policy on Intellectual Property Right (IPR)
 1 Purpose of the document
 2 Why consider the use of this band for digital sound broadcasting?
 3 What digital broadcasting systems might be considered?
 4 The 26 MHz band
        4.1 The existing use of the 26 MHz band
        4.2 Technical considerations related to the 26 MHz band
 5 Service scenarios
 6 Network topologies
        6.1 Single transmitter
        6.2 Multiple Frequency Networks
        6.3 Single Frequency Networks
        6.4 Network topology versus service scenario
 7 Radiating systems
 8 Field strength predictions
 9 Interference
        9.1 Sky wave interference
                  9.1.1 F layer Interference
                  9.1.2 Sporadic E layer interference
        9.2 Other sources of interference
10 Frequency planning scenarios of local coverage services
       10.1 International regulatory approach
       10.2 Local regulatory approach
       10.3 Dual broadcast band
11 DRM deployment for local coverage and regulatory conditions of the 26 MHz band
12 Conclusions and proposals
13 References
14 Acronyms and abbreviations
Annex 1  Transmit delay diversity techniques
Annex 2  Propagation phenomena
Annex 3  DRM 26 MHz measured threshold values
Annex 4  DRM 26 MHz coverage aspects
Annex 5  Results of DRM 26 MHz band trials
 1 Scope of the test
 2 Installation description
 3 Measurements
        3.1 Outdoor measurements
 4 Conclusions
 5 Future developments