CPC H04L 7/042 (2013.01) [H04B 1/70735 (2013.01); H04L 27/3405 (2013.01); H04L 27/3455 (2013.01); H04L 27/3836 (2013.01); H04B 2201/7073 (2013.01); H04L 2212/00 (2013.01)] | 20 Claims |
1. A start field delimiter detector, comprising:
a minimum-shift keying (MSK) demodulation circuit, configured to translate offset quadrature phase shift keying chips into a set of sequences of MSK symbols;
a first circuit, configured to compare whether a first portion of each sequence of MSK symbols matches with a first portion of a respective sequence of reference MSK symbols;
a second circuit, configured to compare whether a second portion of each sequence of MSK symbols matches with a second portion of the respective sequence of reference MSK symbols, wherein the second portion of each respective sequence of reference MSK symbols is invariant; and
a start field delimiter detector circuit configured to indicate detection of a start field delimiter in a packet responsive to the comparison by the first circuit and the comparison by the second circuit.
|