A communication system comprising a transmitter that is adapted to transmit a data signal that is broken into a plurality of time slots. The transmitter inserts communication data into a subset of the plurality of time slots and to create null data representative of information about the communication system. The null data is inserted into a subset of the plurality of time slots not occupied by communication data. A communication system comprising a receiver that receives a data signal that is broken into a plurality of time slots. The receiver identifies correlation peaks in the data signal that correspond to a subset of the plurality of time slots, the subset of the plurality of time slots including null data representative of information about the communication system. The receiver may associate logical values with the correlation peaks and decode the logical values to obtain the information about the communication system.