Patent ID: 7633852

Claim:
A ground-mobile robotic system comprising: an operator control unit (OCU) comprising: a first coded orthogonal frequency division multiplexing (COFDM) receiver, a first OCU transmitter, a second OCU transmitter configured to receive analog audio data from an OCU audio source, modulate an audio data radio frequency (RF) carrier, and transmit the modulated audio data RF carrier via a first simplex RF channel, and an OCU processing element configured to provide control data to the first OCU transmitter via a first serial communication link; and an unmanned ground vehicle (UGV) comprising: a first COFDM transmitter configured to receive analog video data from a video source and to receive analog audio data from a UGV audio source, a first UGV receiver, a second UGV receiver, and a UGV processing element configured to provide feedback data to the first COFDM transmitter via a second serial communication link; wherein the first OCU transmitter is configured to modulate a control data RF carrier and transmit the modulated control data RF carrier to the UGV via a second simplex RF channel such that the transmitted control data RF carrier is received by the first UGV receiver, wherein the first COFDM transmitter of the UGV is configured to multiplex the feedback data, the video data and the audio data, modulate multiplexed data RF carriers using a COFDM scheme and transmit the modulated multiplexed data RF carriers to the OCU via a third simplex RF channel, wherein the first COFDM receiver of the OCU is configured to receive the modulated multiplexed data RF carrier from the UGV, demodulate the received data RF carrier to extract the multiplexed data, and de-multiplex the extracted data into separate video data, audio data, and feedback data, and wherein the first COFDM receiver is further configured to provide the video data to a video display element, provide the audio data to an OCU loudspeaker, and provide the feedback data to the OCU processing element.