Gain control in an orthogonal frequency division multiplexed radar system

Abstract

A radar system comprises a transmitter and a receiver. The radar system is operable to define a near range and a far range. The radar system is operable to, during each one of a plurality of time intervals, repeatedly transmit, via the transmitter, a plurality of OFDM symbols. The transmitter is operable to select a transmit power for the transmission during the one of the time intervals based on from which of the near range and the far range reflections of the OFDM symbols are to be received during the one of the time intervals. The receiver is operable to receive reflections of the OFDM symbols, and process, in the receiver, the reflections of the OFDM symbols to detect objects within the near range and the far range.

What is claimed is: 
     
         1 . A system comprising:
 a radar system comprising a transmitter and a receiver, wherein the radar system is operable to:
 define a near range and a far range; 
 during each one of a plurality of time intervals:
 repeatedly transmit, via the transmitter, a plurality of OFDM symbols; and 
 select, by the transmitter, a transmit power for the transmission during the one of the time intervals based on from which of the near range and the far range reflections of the OFDM symbols are to be received during the one of the time intervals; and 
 
 receive, in the receiver, reflections of the OFDM symbols; and 
 process, in the receiver, the reflections of the OFDM symbols to detect objects within the near range and the far range.