Turbo-detected unequal protection MPEG-4 wireless video telephony using trellis coded modulation and space-time trellis coding | Zendy

Soon Xin Ng | Zendy

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Turbo-detected unequal protection MPEG-4 wireless video telephony using trellis coded modulation and space-time trellis coding

Author(s) -

Soon Xin Ng

Publication year - 2004

Publication title -

fifth iee international conference on 3g mobile communication technologies (3g 2004) the premier technical conference for 3g and beyond

Language(s) - English

Resource type - Conference proceedings

ISSN - 0537-9989

ISBN - 0-86341-388-9

DOI - 10.1049/cp:20040708

Subject(s) - space–time trellis code , computer science , trellis modulation , coding (social sciences) , trellis (graph) , wireless , turbo code , decoding methods , computer network , telecommunications , fading , concatenated error correction code , block code , mathematics , statistics

A jointly optimised turbo transceiver capa- ble of providing unequal error protection is proposed for MPEG-4 aided wireless video telephony. The transceiver advocated consists of Space-Time Trellis Coding (STTC), Trellis Coded Modulation (TCM) and two different-rate Non-Systematic Convolutional codes (NSCs). A benchmarker scheme combining STTC and NSC is used for comparison with the proposed scheme. The video performance of the both schemes is evaluated when communicating over un- correlated Rayleigh fading channels. It was found that the proposed scheme requires about two dBs lower transmit power than the benchmarker scheme in the context of the MPEG-4 videophone transceiver, when aiming for an ef- fective throughput of 2 bits/symbol at a similar decoding complexity.

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