Section II - The Protocol Stack
From the Top Down: The Physical Layer -
Transmission System Specifications


AM and FM Transmission System Specifications
Timing Issues
Signal Quality Issues
        Error Vector Magnitude
        Phase Noise
        Flatness
        AM Amplitude and Phase Symmetry
        Where to Measure AM and FM IBOC Specs
        Spectral Emissions

Spectral Emissions Limits
Existing Analog Masks
IBOC Masks
Spectral Density
        PSD and Spectrum Analyzer Settings
        Spectrum Analyzer Detectors and Averaging
FM Mask
        Digital-to-Digital Intermodulation
        Analog/Digital Intermodulation
        NRSC-5-A Mask (Hybrid FM IBOC)
        Digital Sideband Self-Intermodulation
        Hybrid Mask Fine Tuning
        NRSC-5-A Mask (All-Digital FM IBOC)
        OFDM Subcarrier Scaling
AM Mask
        Analog-to Digital and Digital-to-Digital
            Intermodulation
        NRSC-5-A Mask (Hybrid AM IBOC)
        Analog Host Performance with Hybrid
        NRSC-5-A Mask (All-Digital AM IBOC)
        Discrete Components Exception
        OFDM Subcarrier Scaling
        Timing Issues

IBOC or IBAC?
IBAC Characteristics Differ From IBOC
The Radio "Channel"

(Back to top)

Chapter 9: TABLES
9.1 Protocols Addressed in Chapter 9
9.2 IBOC Timing and Frequency Specifications
9.3 Spectral Characteristics Specifications Common to AM and FM IBOC
9.4 AM and FM IBOC Phase Noise Specifications
9.5 Locations Where NRSC-5 Transmission Characteristics Are Measured
9.6 Analog FM Spectral Mask- 47 CFR 73.317
9.7 Analog AM Spectral Mask- 47 CFR 73.44
9.8 Hybrid FM IBOC Masks
9.9 Early 2001 Hybrid FM IBOC Mask Referenced by FCC
9.10 NRSC-5 -A All-Digital FM IBOC Mask
9.11 FM IBOC OFDM Subcarrier Scaling
9.12 Hybrid FM IBOC Masks
9.13 Early 2001 Hybrid AM IBOC Mask Referenced by FCC
9.14 NRSC-5-A All-Digital AM IBOC Mask
9.15 AM IBOC OFDM Subcarrier Scaling

(Back to top)

Chapter 9: FIGURES
9.1 Error Vectors on a Constellation
9.2 Error Vector Magnitude
9.3 AM and FM IBOC Phase Noise Specifications
9.4 Example of Hermitian Symmetry
9.5 Spectrum Analyzer Detection Illustrated by the Detected Envelope over the Analyzer Dwell Period in One Frequency Bin
9.6 Spectrum Analyzer Traces (FM IBOC)
9.7 Hybrid FM IBOC Third-order Intermodulation Product Frequencies
9.8 Hybrid FM IBOC and Analog Masks
9.9 Digital-to-Digital Spectral Regrowth Products
9.10 NRSC-5-A All-Digital FM IBOC Mask
9.11 Hybrid AM IBOC Spectral Regrowth under Mask
9.12 Hybrid AM IBOC and Analog Masks
9.13 NRSC-5-A All-Digital AM IBOC Mask
9.14 Amplitude Scale Factors of AM IBOC Sidebands

(Back to top)