Systems and methods for data frame and data symbol synchronization in a communication network

A method for incorporating synchronization data symbols in a data frame of a communication system, comprising:

• generating a sequence of data symbols that are conjugate symmetric, the sequence including a first set of data symbols and a second set of data symbols, each data symbol of the second set of data symbols being a complex conjugate of a respective data symbol of the first set of data symbols;
• and
• inserting the sequence in a predetermined position of a data frame to be transmitted by the communication system, for use in identifying a position of the data frame,
• wherein:
• the data frame comprises at least two dimensions, and
• inserting the sequence in the predetermined position of the data frame comprises inserting the sequence in only a single dimension of the data frame.

A method for synchronizing a data frame and data symbols in a communication system, comprising:

• generating a sequence of data symbols that are conjugate symmetric, the sequence including a first set of data symbols and a second set of data symbols, and each data symbol of the second set of data symbols being a complex conjugate of a respective data symbol of the first set of data symbols;
• inserting the sequence in a predetermined position of a transmitter-side data frame;
• at a transmitter, converting constituent data symbols of the transmitter-side data frame to communication signals;
• and
• transmitting the communication signals from the transmitter to a receiver,
• wherein:
• the transmitter-side data frame comprises at least two dimensions, and
• inserting the sequence in the predetermined position of the transmitter-side data frame includes inserting the sequence in only a single dimension of the transmitter-side data frame.

A method for synchronizing a data frame and data symbols in a communication system, comprising:

• at a receiver, converting received communication signals to a stream of received data symbols;
• detecting presence of a sequence in the stream of received data symbols, the sequence including a sequence of data symbols that are conjugate symmetric, the sequence including a first set of data symbols and a second set of data symbols, and each data symbol of the second set of data symbols being a complex conjugate of a respective data symbol of the first set of data symbols;
• and
• identifying a position of a received data frame from the presence of the sequence,
• wherein:
• detecting the presence of the sequence includes determining an autocorrelation value between (a) a first sliding window sample of the stream of received data symbols and (b) and a second sliding window sample of the stream of received data symbols,
• the first sliding window sample has a length equal to a length of the first set of data symbols, and
• the second sliding window sample has a length equal to a length of the second set of data symbols.