Digital radio

Digital radio

Digital signal transmission method digital signal...

Digital subscriber line transmission method, apparatus and...

Digital subscriber line transmission method, apparatus and...

Digital telephone switching system having plural terminal device

Digitally-tunable echo-cancelling analog front end for...

Distance/ranging by determination of RF phase delta

Distance/ranging determination using relative phase data

Distributed network repeater system

Distributed port select method for a multi-segment repeater

Distributed system and method for the remote acquisition of...

Distributed system and method for the remote acquisition of...

Distributing mobile stations across carriers of plural...

Double talk detector for echo cancellation in a speech...

Double-Talk detector for echo canceller

DSL active modem detection

DSL transmission system with means for ensuring local echo...

DTMF signal transmission method in single frequency simultaneous

DTMF transmission structure of W-CDMA WLL system