Wireless Technology Terms, Glossary and Dictionary

VSB: Vestigial Sideband

Vestigial sideband (VSB) is a type of amplitude modulation technique that encodes data by varying the amplitude of a single carrier frequency. Portions of one of the redundant sidebands are removed to form a vestigial sideband signal. Television broadcasts (regardless of NTSC, PAL, or SECAM analog video format) use this method if the video is transmitted in AM, due to the enormous bandwidth used. It may also be used in digital transmission, such as the ATSC-standardized 8-VSB. The Milgo 4400/48 modem used vesitigial sideband and phase-shift keying to provide 4800 bit/s transmission over a 1600 Hz channel.

Related Terms

VSB: Vestigial Sideband