Double data rate serial encoder
Doubly orthogonal code and frequency division multiple...
Downlink beam hopping waveform
Drop/insert channel selecting system
Drop/insert multiplexer for data channel access units
Drop/insert processing circuit
Ds-cdma transmission method
Ds/cdma receiver using parallel-operating multi-purpose...
Ds3 to 28 vt1.5 sonet interface circuit
Dual asyncronous mapping of client signals of arbitrary rate
Dual band combiner arrangement
Dual mode rotary microwave coupler
Dual polarization transmission system
Dual-ring atm communications system
Duo-signalling system
Duplex communication on a single optical fiber
Duplex optical transmission system
Duplex optical transmission system
Duplex reflective re-configurable optical add/drop multiplexer
Duplex speech transmission method and a system therefor