R&D Report 1966-15 : Compatible single-sideband modulation: Experimental investigation of the performance with conventional AM receivers. J.B. Izatt
A laboratory investigation is described of the overall performance of a compatible single sideband (c.s.s.b) system when used with current types of domestic receivers. The systems employs an alternative method of amplitude modulation to that normally used in the l.f., m.f. and h.f. broadcasting bands, the sideband on one side of the carrier being largely suppressed. Audio quality, performance under fading conditions, co-channel and adjacent-channel interference were all measured. In general, c.s.s.b. showed very little difference in performance from conventional double-sideband amplitude modulation. With existing receivers a significant difference was found only for adjacent-channel interference, when either an advantage or a disadvantage could arise depending on the symmetry of the suppressed sidebands of the transmissions.