초록 ▼

The present invention is directed to a dynamic range enhancing system for increasing the dynamic range of a transmission link, characterized as either an analog or digital link. The system includes a pre-processing unit, provided at a first location, that receives, as input, a transmit signal, and a

The present invention is directed to a dynamic range enhancing system for increasing the dynamic range of a transmission link, characterized as either an analog or digital link. The system includes a pre-processing unit, provided at a first location, that receives, as input, a transmit signal, and a post-processing unit, provided at a second location, remote from the first location, that receives, as input, a signal transmitted over the transmission link. The pre-processing unit includes a first signal level adjusting device for adjusting a signal level of the transmit signal to be transmitted over the transmission link and a control signal maybe provided for controlling the post-processing unit, and the post-processing unit includes a second signal level adjusting device for adjusting a signal level of the adjusted transmit signal transmitted over said transmission link. The transmit signal and the control signal maybe combined and transmitted over the transmission link together so as to eliminate synchronization problems. In this arrangement the overall system gain remains substantially constant.

대표청구항 ▼

A dynamic range enhancing system for enhancing performance of a transmission link by controlling a transmit signal to be transmitted along a communication path comprising said transmission link, said transmission link extending from a first location to a second location remote from said first locati

A dynamic range enhancing system for enhancing performance of a transmission link by controlling a transmit signal to be transmitted along a communication path comprising said transmission link, said transmission link extending from a first location to a second location remote from said first location, said system comprising: a pre-processing unit, provided at said first location, that receives, as input, said transmit signal, said pre-processing unit comprising a first signal level adjusting means for adjusting a signal level of said transmit signal to be transmitted over said transmission link, and means for transmitting said adjusted transmit signal over said transmission link; and a post-processing unit provided at said second location that receives, as input, said adjusted transmit signal transmitted over said communication link, said post-processing unit comprising a second signal level adjusting means for adjusting a signal level of said adjusted transmit signal transmitted over said transmission link; said pre-processing unit further comprising control means for controlling said first signal level adjusting means and said second signal level adjusting means, such that the overall system gain is substantially constant, said control means comprising means for detecting the signal level of said transmit signal at an input of said pre-processing unit, means for generating a first control signal for controlling said first signal level adjusting means based on the signal level detected by said detecting means, means for generating a second control signal for controlling said second signal level adjusting means based on the signal level detected by said detecting means, said second control signal comprising a constant amplitude signal, combining means for combining said transmit signal and said second control signal before said transmit signal has been adjusted by said first signal level adjusting means, and means for transmitting said second control signal with said adjusted transmit signal over said transmission link to said post-processing unit.