A NEW METHOD IN DIGITAL COMMUNICATION CALLED VERTICAL CODING

In coding problem, one of the important goals is increasing inter symbol distance. This is achieved with increasing Hamming distance in cyclic codes and with Euclid-ean distance in the coded modulation. At the present methods which use coding for decreasing error probability, increasing distance causes additive parity bits to data sequence. But in this method at first, increase signal dimension and then only two greatest signal distances are selected from signal constellation for sending only one bit. In fact redundant data locate in dimension instead of time axes. So far multidi-mensional signal has been used, but indeed number of signal has been used with increased dimension, and this is major disadvantages of these methods. Therefore natural power of dimension is not used. In this paper this new method is introduced and is compared with usual methods for 3 Redundant and BPSK and the advantages are discussed. 1