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