• Space Station Communications Using Interplex Modulation

      Butman, S.; Lafrieda, J.; Timor, U. (International Foundation for Telemetering, 1971-09)
      This paper describes a new PSK/PM modulation scheme, called interplex, which reduces cross-modulation loss. The scheme can be implemented without significant hardware changes in existing systems, and can be incorporated into the Space Station Telecommunications system.