Patent ID: 8358709

Claim:
Apparatus adapted to transmit a sequence of data bits, the apparatus comprising: a transmitter comprising: an encoder comprising a first generator and a second generator, adapted to generate from said sequence of data bits a convolutional code comprising an output of each of said first and second generators, the output of said first generator adapted to determine a transmit polarity of a respective one of said bits and the output of said second generator adapted to determine a transmit position of said respective bit, wherein an octal value of each of said generators has been chosen so as to maximize the dfree of said code while providing substantially the same performance as an optimum code which is adapted to determine only said transmit polarity; and wherein the transmitter is adapted to transmit each bit of said sequence of data bits in accordance with said respective transmit polarity output of said first generator and said respective transmit position output of said second generator.