Patent ID: 6195534
Filing Date: 2001-02-27
Classification: H04B,H04L

Abstract:
A communication method for transmitting high priority data and low priority data at a same time using a plurality of sub-carriers, said communication method comprising the steps of:transmitting a transmission signal including first sub-carriers whereon said high priority data is superimposed and second sub-carriers whereon said low priority data is superimposed, said first and said second sub-carriers being positioned alternately;performing, at a receiving side, a predetermined reception processing on said transmission signal to obtain a first reception symbol stream constituted by a first alignment of symbols on a frequency axis, extracting high priority signal components relating to said high priority data by adding a delayed symbol stream constituted by said first reception symbol stream delayed for a predetermined time to said first reception symbol stream, and decoding said high priority data by correlation value detection from said high priority signal components; andperforming a Fourier transform processing on said first reception symbol stream to obtain a second reception symbol stream constituted by a second alignment of said symbols on a time axis, and extracting low priority signal components of said low priority data from said second reception symbol stream for decoding said low priority data.