Image Quality Degradation Reduction Method for Wireless Transmission of Compressed Moving Picture Using Weighted CDMA Channel

Abstract

We examine an application of weighted transmission to restrain an occurrence of fatal error for compressed image sequence in CDMA. At first, we do weighted transmission to make a different channel of bit error performance. In weighting method, we examine a signal amplitude method and a decision by majority method. Next, we apply weighted transmission to MPEG image sequence. We quantified the level of importance of image sequence and transmit based on it. As a result, we confirmed that the weighted transmission is better quality of compressed image sequence than conventional method.