High-efficiency preambles for communications systems over pseudo-stationary communication channels

A method of transmitting High-Throughput Unicast (HTU) data packets through a coaxial network, comprising:

• a) generating an HTU preamble including the following symbols CP0, CE;
• b) appending the HTU preamble to a data payload;
• c) transmitting the data payload and HTU preamble over a communication channel in a MoCA network;
• d) generating an Admission Preamble including the following symbols SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, LS1, LS1, LS1, LS1, LS1, LS1, LS1, LS1, CP0, CE, CE;
• e) appending the Admission Preamble to a data payload;
• and
• f) transmitting the admission data payload and appended Admission Preamble over a communication channel in a MoCA network;
• g) generating a MAP preamble including the following symbols:
• i) 4 LS symbols;
• iii) a cyclic prefix;
• and
• iii) a CE symbol;
• h) appending the MAP preamble to a data payload;
• and
• i) transmitting the data payload and appended MAP preamble over a communication channel in a MoCA network;
• wherein the CP0 is a repeat of the end of the symbol, and CE is a 256-bit binary data sequence in which each bit is modulated on one of a plurality of active sub-carriers and wherein the SS symbol is defined by a 30-bit binary data input sequence, and the LS1 symbol is defined by a 64-bit binary data input sequence.