Criterion 3 Coverage area and graceful degradation – Estimated actual coverage area for a given power level for the system under various propagation conditions. Coverage area will be defined as those surface area segments where the decoded signal is acceptable for the intended market. Criterion 4 Compatibility with new and existing transmitters – The ability to transmit the system waveform efficiently either: currently available transmitter and antenna combinations with little or no modification – required to the equipment; transmitter and antenna equipment specifically designed to carry it; – transmitter and antenna equipment specifically designed to carry it and existing analogue – formats. The ability of such configurations to operate with acceptable levels of spurious emissions. NOTE 1 Many broadcasters will want or need to use their existing analogue broadcasting plant to carry the – new digital services for a considerable time. Criterion 5 Channel planning considerations – Current channelization and interference rules will initially be important constraints even if studies and developments enable changes to be made in the future through the correct regulatory process. System possibilities therefore need at to be evaluated against existing rules for bandwidth occupancy, outofband emissions, spurious emissions, interference effects, etc. Criterion 6 Single frequency network operation – The ability of any new system to operate as a single frequency network needs to be assessed. Many broadcasters consider this to be a desirable feature. Criterion 7 Receiver cost and complexity – The possibility of both basic and advanced receivers needs to be considered. The receiver cost is obviously related to other criteria an approximate cost estimate will be required for each criterion – and variant. Criterion 8 Interference – The subjective and objective audio quality of the system operating with co- and/or adjacent channel interference from either digital or analogue sources. This should take into account both the ability of the signal to overcome interference in its own service areas and its propensity to interfere with other broadcasts outside it. Criterion 9 Rapid tuning and channel acquisition – Listeners are accustomed to little or no when switching on or tuning a radio receiver. The system design must therefore address: the ease with which the listener can select the wanted station or signal; – the to acknowledge a request to select or change a channel; – the speed to acquire audio lock; – gaps (if any) in the signal when changing to an alternative or stronger source of the – wanted signal.
Criterion 3 – Coverage area and graceful degradation Estimated actual coverage area for a given power level for the system under various propagation conditions. Coverage area will be defined as those surface area segments where the decoded signal is acceptable for the intended market. Criterion 4 – Compatibility with new and existing transmitters The ability to transmit the system waveform efficiently either: – currently available transmitter and antenna combinations with little or no modification required to the equipment; – transmitter and antenna equipment specifically designed to carry it; – transmitter and antenna equipment specifically designed to carry it and existing analogue formats. The ability of such configurations to operate with acceptable levels of spurious emissions. NOTE 1 – Many broadcasters will want or need to use their existing analogue broadcasting plant to carry the new digital services for a considerable time. Criterion 5 – Channel planning considerations Current channelization and interference rules will initially be important constraints even if studies and developments enable changes to be made in the future through the correct regulatory process. System possibilities therefore need at to be evaluated against existing rules for bandwidth occupancy, outofband emissions, spurious emissions, interference effects, etc. Criterion 6 – Single frequency network operation The ability of any new system to operate as a single frequency network needs to be assessed. Many broadcasters consider this to be a desirable feature. Criterion 7 – Receiver cost and complexity The possibility of both basic and advanced receivers needs to be considered. The receiver cost is obviously related to other criteria – an approximate cost estimate will be required for each criterion and variant. Criterion 8 – Interference The subjective and objective audio quality of the system operating with co- and/or adjacent channel interference from either digital or analogue sources. This should take into account both the ability of the signal to overcome interference in its own service areas and its propensity to interfere with other broadcasts outside it. Criterion 9 – Rapid tuning and channel acquisition Listeners are accustomed to little or no when switching on or tuning a radio receiver. The system design must therefore address: – the ease with which the listener can select the wanted station or signal; – the to acknowledge a request to select or change a channel; – the speed to acquire audio lock; – gaps (if any) in the signal when changing to an alternative or stronger source of the wanted signal.
R-REC-BS.1514-2-201103-I!!MSW-E.docx