8-level Vestigial SideBand (8VSB) is the modulation technique employed by the ATSC system for digital television transmission. 8VSB is a form of amplitude modulation utilized for binary data transmission. The data stream is segmented into pairs of 2 bits each, with an additional error correction bit added to each 2-bit group. These 3 bits collectively represent one of eight distinct levels (-7, -5, -3, -1, 1, +3, +5, or +7), which is used to modulate the amplitude of the radio-frequency carrier. Following modulation, the signal undergoes filtering to retain only the carrier and a 6 MHz upper band