information source coding process, information source decoding process, information source coding apparatus and information source decoding apparatus

摘要

information source encoding process, information source decoding process, information source encoding apparatus and information source decoding apparatus the present invention relates to an information source encoding process for encoding a signal Gaussian integer includes the steps of: introducing a signal value sequence of a Gaussian integer signal as an encoding target; transforming the signal values included in the input signal value sequence into pairs of integers, each having two integers, arranged in the order of entry; consider each pair of integers as a point in the mesh in two-dimensional coordinates and obtain integer values greater than or equal to zero by performing a two-dimensional to one-dimensional mapping in which the shorter the distance from each point in the mesh to the origin, the lower the value assigned to the mesh point by the mapping; and encoding integer values using codes that are used to encode an information source that follows an exponential distribution.