Packet detector

Abstract

There are several exemplary ways to more efficiently communicate an out-of-domain seed to a receiver—in a first technique, the seed can be indicated in the header portion or data portion of a packet. For example, the header portion of the packet could contain one or more bit fields that indicate the value of the LFSR seed used for the preamble portion of the packet. The receiver would learn the out-of-domain seed after receiving a first out-of-domain packet and decoding the header portion of that packet. After learning the out-of-domain seed, the receiver could send a packet indicating the value of the out-of-domain seed to the local master. The local master could then transmit the value of the out-of-domain seed in the header portion or data portion of a local MAP frame.

1 . A method of OFDM communication comprising:
 transmitting, by a transmitter, a packet including a header portion and preamble portion,   wherein:
 the preamble portion includes a plurality of OFDM symbols modulated using a constellation scrambler, 
 the constellation scrambler includes an LFSR generator that is initialized with a seed, and 
 the header portion of the packet contains one or more bit fields that contain information that can be used to determine a value of the seed used to generate the preamble portion of the packet. 
   
     
     
         2 .- 26 . (canceled)