downlink

1. The microwave radio link from a satellite to a terrestrial receive antenna. See also link, microwave, radio, and uplink. 2. In a cellular network, the radio link from the base station (BS) to the mobile station (MS). See also cellular radio, link, radio, and uplink.

• special resource function (SRF)
• specification
• speckle noise
• speckling
• spectral efficiency
• spectral width
• spectrum
• spectrum allocation
• spectrum management
• speech
• speech
• speech recognition
• speech recognition
• Speech-to-Speech (STS)
• speech-to-text
• speed of light
• SPE (Synchronous Payload Envelope)
• SPID (Service Profile IDentification)
• spike
• spim or SPIM (SPam over Instant Messaging)
• splice
• splice case
• splice tray
• splitter
• splitterless ADSL (splitterless Asymmetric Digital Subscriber Line Lite)