Data transmission process with auto-synchronized correcting code, auto-synchronized coder and decoder, corresponding transmitter and receiver

An auto-synchronized coder, comprising:

• means for forming synchronization management signals, wherein the synchronization management signals comprise:
• a symbol clock signal m times less fast as a clock signal timing the data bits, where m is an integer, and m bits constitute an information symbol,
• a symbol synchronization signal locating the start of each symbol,
• a data acquisition interruption signal intervening every K number of symbols, where K is a pre-set integer;
• and
• means for inserting, under control of the acquisition interruption signal, a packet header before a first group of K symbols, and a second group of R symbols after said first group, the second group of R symbols constituting a correcting code assigned to the K symbols of the first group, R being a pre-set integer based at least in part upon the correcting code type used, the first and second group of (R+K) symbols forming a packet, and the header being a header specific to this packet.

A transmitter, comprising:

• a transmission module configured to modulate the data and to spread the spectrum of the data by a pseudo-random sequence;
• and
• an auto-synchronized coda, before said transmission module, comprising:
• means for forming synchronization management signals, the synchronization management signals comprising:
• a symbol clock signal m times less fast than a clock signal timing the data bits, where m is an integer, m bits constituting an information symbol,
• a symbol synchronization signal locating the start of each symbol, and
• a data acquisition interruption signal intervening every K number of symbols, where K is a pre-set integer;
• means for inserting, under control of the acquisition interruption signal, a packet header before a first group of K symbols and a second group of R symbols after said first group, the second group of R symbols constituting a correcting code assigned to the K symbols of the first group, R being a pre-sent integer dependent on the correcting code type used, the first and second group of(R+K) symbols forming a packet, and the header being a header specific to this packet.