Search for dissertations about: "probabilistic shaping"

Found 4 swedish dissertations containing the words probabilistic shaping.

  1. 1. On Probabilistic Shaping and Learned Decoders with Application to Fiber-Optic Communications

    Author : Andreas Buchberger; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Error correcting codes; probabilistic shaping; pruning; fiber-optic communications; machine learning; learned decoders; iterative decoding;

    Abstract : We live in an ubiquitously connected world whose backbone are optical fibers. Achieving high spectral efficiencies and hence high transmission rates requires a careful combination of forward error correction (FEC) and higher-order modulation. This is referred to as coded modulation. READ MORE

  2. 2. On hard-decision forward error correction with application to high-throughput fiber-optic communications

    Author : Alireza Sheikh; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; product-like codes; bounded distance decoding; staircase codes.; product codes; hard decision decoding; generalized minimum distance decoding; probabilistic shaping; coded modulation; Achievable information rates;

    Abstract : The advent of the Internet not only changed the communication methods significantly, but also the life-style of the human beings. The number of Internet users has grown exponentially in the last decade, and the number of users exceeded 3.4 billion in 2016. READ MORE

  3. 3. Meteorological impact and transmission errors in outdoor wireless sensor networks

    Author : Hjalmar Wennerström; Lars-Åke Nordén; Christian Rohner; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Datavetenskap med inriktning mot datorkommunikation; Computer Science with specialization in Computer Communication;

    Abstract : Wireless sensor networks have been deployed outdoors ever since their inception. They have been used in areas such as precision farming, tracking wildlife, and monitoring glaciers. These diverse application areas all have different requirements and constraints, shaping the way in which the sensor network communicates. READ MORE

  4. 4. Channel-Aware Multilevel Coded Modulation for Coherent Fiber-Optic Communications

    Author : Lotfollah Beygi; Chalmers University of Technology; []
    Keywords : channel model; multidimensional set partitioning; low-complexity de- tector; coded modulation; signal statistics.; nonlinear phase noise; Fiber-optic communications;

    Abstract : The past decades have shown an ever-increasing demand for high-rate Internet services, motivating a great effort to increase the spectral efficiency of optical networks. In general, fiber-optic links are non-Gaussian, and in contrast to additive white Gaussian noise (AWGN) channels, there is no standard framework for quantifying fundamental limits or designing capacity-approaching coding schemes for such channels. READ MORE