Systems and methods for a multi-carrier transceiver with radio frequency interference reduction

Abstract

A multi-carrier information transceiver that exhibits robustness against radio frequency interference (RFI) signals present in the communications channel. The transceiver includes a RFI mitigation technique that operates not only during the steady state operation of the transceiver but also during the training stage of the transceiver. That requires dynamically modifying the training signals when the presence of RFI is detected. The modification of the training signals facilitates the estimation of RFI, improving the performance of the multi-carrier transceiver.

What is claimed is:  
     
         1 . A multi-carrier modulation transceiver comprising: 
 a tone manager; and    a multi-carrier transmitter that disables one or more tones during at least one training state based on a received tone disable message.    
     
     
         2 . The transceiver of  claim 1 , wherein the one or more tones are disabled to assist in determining impairments in a communications channel.  
     
     
         3 . The transceiver of  claim 2 , where the impairment is one of radio frequency interference and communications channel noise.  
     
     
         4 . The transceiver of  claim 1 , wherein the one or more tones can be disabled during a data communication state.  
     
     
         5 . The transceiver of  claim 1 , further comprising one or more templates that are used to estimate radio frequency interference.  
     
     
         6 . The transceiver of  claim 1 , wherein one or more templates model radio frequency interference and are dynamically chosen for one or more discrete multi-tone symbols.  
     
     
         7 . The transceiver of  claim 1 , further comprising a symbol generator and a frequency domain to time domain converter.