CONTENTS

Policy on Intellectual Property Right (IPR)
 1     In-band, on-channel digital sound broadcasting overview
        1.1     Introduction
        1.2     Conversion to digital technologies
 2     IBOC broadcast system development concepts
        2.1     IBOC system features
        2.2     Compatibility with existing analogue FM services
        2.3     Use of on-channel repeaters for FM systems
        2.4     Seamless Transition from Analogue to Hybrid to All-Digital Systems
        2.5     Economical implementation
 3     IBOC broadcast architecture
        3.1     Studio considerations
        3.2     Audio processing
        3.3     Studio-to-transmitter link
        3.4     IBOC VHF transmitters
                  3.4.1     Low-level combined/commonly amplified
                  3.4.2     High-level combined/separately amplified
                  3.4.3     10-dB coupler
                  3.4.4     Separate Analogue and Digital Antennas
        3.5     Dual input antenna
        3.6     On-channel digital repeaters
        3.7     FM subsidiary communications authorization compatibility
 4     Broadcast system functional types
        4.1     Operational hybrid types
        4.2     Operational all-digital types
        4.3     Reference broadcast system
        4.4     IBOC data service channel
        4.5     Datacasting system
        4.6     Emergency alert system
        4.7     GPS synchronization
        4.8     RF carrier frequency and OFDM symbol clock
        4.9     GPS phase lock
 5     FM IBOC RF requirements
        5.1     FM hybrid and extended hybrid digital carrier power
                  5.1.1     Hybrid and extended hybrid system carrier configuration
        5.2     Digital power for hybrid mode at various digital to analogue power ratios
        5.3     Power limits for asymmetrical sideband operation
        5.4     Spectral emissions limits for hybrid transmissions
        5.5     Spectral emissions limits for all-digital transmissions
        5.6     Digital sideband levels
        5.7     RF spectral inversion
        5.8     Phase noise
        5.9     Discrete phase noise
       5.10     Modulation error ratio
                  5.10.1     Data subcarriers
                  5.10.2     Data subcarrier to reference subcarrier power ratio
       5.11     Gain flatness
                  5.11.1     Group delay flatness
 6     IBOC broadcast topology
        6.1     Gates air broadcast topology
        6.2     Nautel broadcast topology
        6.3     Rohde & Schwarz broadcast topology
 7     Combiner systems
        7.1     Filter characteristics
                  7.1.1     Balanced combiner
                  7.1.2     Notch filter constant impedance combiner
                  7.1.3     Band-pass constant impedance combiner
 8     Combined site facilities
        8.1     Miami
                  8.1.1     Miami site data
                  8.1.2     Miami physical plant configuration
        8.2     Houston
                  8.2.1     Houston site data
                  8.2.2     Houston spectrum analysis
                  8.2.3     Houston physical plant configuration
        8.3     New York City
                  8.3.1     New York City Site Data
                  8.3.2     New York City physical plant configuration