Search for dissertations about: "Trellis codes"
Showing result 11 - 15 of 19 swedish dissertations containing the words Trellis codes.
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11. Trellis Source Coding Methods for Low Rates and Short Blocks
Abstract : Trellis quantization is a finite state machine based method for data compression. It is mainly applied to quantizing noise-like sources. In this thesis new trellis codes suitable for low rate quantization are derived. READ MORE
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12. Turbo Codes and Channel Estimation in Wireless Systems
Abstract : This thesis focuses on practical implementation issues of turbo codes with imperfectly estimated fading wireless channels and limited code length. Channel estimation can be divided into estimation of static parameters, such as constant timing and phase offset, and dynamic parameters, such as fading channel amplitudes. READ MORE
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13. Taming of the BEAST
Abstract : Modern communication systems are designed to enable reliable and fast information transfer. Therefore, efficient channel coding and decoding strategies are needed, which guarantee sufficiently low probability of erroneous reception with affordable receiver complexity. READ MORE
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14. Spatially Coupled Turbo-Like Codes
Abstract : The focus of this thesis is on proposing and analyzing a powerful class of codes on graphs---with trellis constraints---that can simultaneously approach capacity and achieve very low error floor. In particular, we propose the concept of spatial coupling for turbo-like code (SC-TC) ensembles and investigate the impact of coupling on the performance of these codes. READ MORE
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15. In-Line Bit Interleaved Serially Concatenated Coded Modulation
Abstract : A communication system using in-line bit interleaved serially concatenated trellis coded modulation (SCTCM) over the additive white Gaussian noise (AWGN) channel is investigated. In-line bit interleaving refers to an interleaving method for which the random bit interleaver is divided into several independent constituent bit interleavers. READ MORE