2012/02/28 by Roghayeh Joda, Joda, Roghayeh, Farshad Lahouti +1
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Network Optimization #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Information Theory (cs.IT)
paper · pdf · doi:10.48550/arxiv.1202.6175
openalex publication_date 2012/02/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, delay-limited transmission of quasi-stationary sources over\nblock fading channels are considered. Considering distortion outage probability\nas the performance measure, two source and channel coding schemes with power\nadaptive transmission are presented. The first one is optimized for fixed rate\ntransmission, and hence enjoys simplicity of implementation. The second one is\na high performance scheme, which also benefits from optimized rate adaptation\nwith respect to source and channel states. In high SNR regime, the performance\nscaling laws in terms of outage distortion exponent and asymptotic outage\ndistortion gain are derived, where two schemes with fixed transmission power\nand adaptive or optimized fixed rates are considered as benchmarks for\ncomparisons. Various analytical and numerical results are provided which\ndemonstrate a superior performance for source and channel optimized rate and\npower adaptive scheme. It is also observed that from a distortion outage\nperspective, the fixed rate adaptive power scheme substantially outperforms an\nadaptive rate fixed power scheme for delay-limited transmission of\nquasi-stationary sources over wireless block fading channels. The effect of the\ncharacteristics of the quasi-stationary source on performance, and the\nimplication of the results for transmission of stationary sources are also\ninvestigated.\n