TRANSMISSION OF COMPRESSED VIDEO OVER RADIO LINKS

A system for transmitting a compressed video signal over a radio link has been developed. The scheme involves altering the output bit stream of a standard video codec to allow data transmission over a cordless telecommunications demonstrator system. The system was used to demonst rate acceptable picture quality at bit rates between 32 kbit/s and 384 kbit/s. The high error rate possible for a radio link requires that t echniques for improving the error resilence of the coding scheme be in vestigated. The resilience may be improved by forward error correction , interleaving of the data stream and by repeating blocks which have b een corrupted by transmission. The viability of the system has been pr oved by hardware trials but further study is required before the syste m is suitable for use on a real network.