Which terrestrial transmission technology was selected by the Advanced Television Committee (ATSC)?

The Advanced Television Committee (ATSC) selected 8-level vestigial sideband (8-VSB) as the standard for terrestrial digital television transmission due to its effectiveness in delivering high-quality broadcast signals over the air. This technology is specifically designed for the unique challenges of terrestrial broadcast, such as accommodating multipath interference and ensuring reliable reception in various geographical and atmospheric conditions.

8-VSB allows for higher data rates and better spectral efficiency, enabling the transmission of multiple channels and high-definition content within the same bandwidth used by analog television. This advancement represents a significant improvement over previous analog methods, offering improved picture quality and more robust signal reception, especially in urban environments where reflections and obstructions can complicate signal transmission.

While other technologies like Frequency Modulation (FM), Quadrature Phase Shift Keying (QPSK), and Superposition Modulation have their own applications in different contexts, they do not provide the specific advantages in terms of broadcast television that 8-VSB does. Thus, it's the chosen method for meeting the goals of digital broadcasting as outlined by the ATSC.