Interlace coding system to avoid error propagation of source coding systems

An interlace coding system to avoid error propagation of source coding systems is proposed and its error performance on additive white Gaussian noise (AWGN) channel with quadrature phase shift keying (QPSK) is analyzed. The proposed system handles data compression, data encryption and error correcting processes together, i.e. adds error correcting redundancy to the block lists of the dictionary which the compression system constructs to reduce source redundancy. The authors found that the catastrophic condition depends only on the size of the dictionary for the proposed system. Thus, by employing a large dictionary, good error performance can be obtained by the proposed system and the catastrophic condition can be avoided