Patent ID: 8171355
Filing Date: 2012-05-01
Classification: H04L

Abstract:
1. A data communication system that transmits data through a transmission path between a transmission side apparatus and a reception side apparatus, wherein the transmission side apparatus comprises: a coding apparatus to create redundantly-coded data from original data; a transmitting apparatus to send the coded data coded by the coding apparatus to the transmission path; and a coding rate determining apparatus to set and control a coding rate in the coding apparatus, and the reception side apparatus comprises: a receiving apparatus to receive the coded data sent through the transmission path; a decoding apparatus to decode the coded data received to obtain the original data; and a loss rate estimating apparatus to obtain the loss rate on the path of the coded data sent, and wherein the coding rate determining apparatus of the transmission side apparatus varies the coding rate in the coding apparatus based on the loss rate obtained, wherein the coding apparatus of the transmission side apparatus obtains solutions by substituting the original data and predetermined constant data into simultaneous equations of Boolean algebra, to determine a combination of the predetermined constant data and the solutions as the coded data, and the decoding apparatus in the reception side apparatus decodes the received coded data to obtain the predetermined constant data and the solutions, and substitutes the obtained, predetermined constant data and the solutions into the simultaneous linear equations to obtain the original data.