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Study on Optimization of Signal Transmission Technology Based on Layered Source with Superposition Coding
Abstract:
The optimization of wireless multipoint multimedia broadcasting system layered source transmission was studied and analyzed. The introduction of continuous layered source with superposition coding model infinite layer in this article, the optimal inter-layer power distribution function is given by variation method, then an average per user up to speed is obtained. In the simulation, the LSSC which introduces a layered source coding scheme compared with the traditional CB Scheme. LSSC transmit multiple data streams to meet different end user channel conditions is verified by the results. The problem of system performance loss due to channel asymmetry between the center of the cell edge users and users bring have been effective solved.
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653-657
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Online since:
May 2014
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© 2014 Trans Tech Publications Ltd. All Rights Reserved
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