What is Single Sideband (SSB) modulation and its advantages?

SSB modulation transmits only one sideband of AM signal (upper or lower), removing carrier and opposite sideband. Generation methods: Filter method (sharp sideband filter), Phase shift method (Weaver or Hartley), or Adaptive filters. Advantages: Bandwidth efficiency (half of conventional AM), Power efficiency (no carrier power wasted), Reduced fading (no carrier nulling). Disadvantages: Requires coherent demodulation (stable reference), more complex implementation. Used in amateur radio, HF communication, and professional radio where bandwidth and power are limited.