This document discusses single sideband (SSB) modulation. It begins by reviewing double sideband suppressed carrier (DSB-SC) modulation and how SSB modulation is derived from DSB-SC by suppressing one of the sidebands. It then provides the mathematical expressions for upper SSB and lower SSB modulation. The document also covers the Hilbert transform and how it relates to SSB modulation. It describes the spectra of upper and lower SSB signals and two methods for modulating SSB: frequency discrimination and phase discrimination. Finally, it discusses demodulation of SSB signals.