Main Article Content
Two transmission modes were standardized in UMTS: a Circuit Switched (CS) and a Packet Switched (PS) mode. In both cases, an efficient transmission framework was defined to allow the transmission of multimedia information with the required reliability, in spite of the medium characteristics. Multimedia calls are delivered in several transport channels - one for each media related to the call - properly multiplexed in one or more physical channels. These transport channels are designed to attain the required levels of QoS using two main techniques: Channel Coding and Rate Matching. In this paper we discuss the creation of transport channels for voice calls in both CS and PS modes and present a new methodology to optimize the Rate Matching parameters for a given channel coder and a set of QoS objectives. With the proposed methodology the maximum Eb/N0 assigned to the transport channels is minimized, thus reducing the transmitted power.
How to Cite
R. Vale, E., Grivet, M., & Célio B. Brandão, J. (2015). Performance of Voice Calls with Rate Matching Optimization in UMTS Networks. Journal of Communication and Information Systems, 20(3). https://doi.org/10.14209/jcis.2005.19
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