Essays about: "Constant weight codes"

Found 5 essays containing the words Constant weight codes.

  1. 1. Spectroscopic model characterisation of hot exoplanet atmospheres

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

    Author : Elin Sandvik; [2022]
    Keywords : Transit method; Transmission spectroscopy; Exoplanets; Hot Jupiter; Modelling; Physics and Astronomy;

    Abstract : Hot Jupiters are gas giants under intense stellar radiation with short orbital periods of only a few days. Due to their large radii, hot temperatures, and large scale heights, hot Jupiters can be observationally characterised in detail through spectroscopy over an entire orbital phase. READ MORE

  2. 2. Construction of Superimposed Codes Using Graphs and Galois Fields

    University essay from Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

    Author : David Johansson; [2017]
    Keywords : ;

    Abstract : In this thesis some constructions of superimposed codes are presented. Many of the known nontrivial constructions arise from t−designs, and the constructions discussed in this thesis is also based on a block design idea. Superimposed codes are rather combinatorial in nature, so the connection to t−designs is not too surprising. READ MORE

  3. 3. New Methods in Finding Binary Constant Weight Codes

    University essay from Fakulteten för teknik- och naturvetenskap

    Author : David Taub; [2007]
    Keywords : constant; weight; binary; codes;

    Abstract : This thesis presents new methods for finding optimal and near-optimal constant weight binary codes with distance d and weight w such that d=2(w-1). These methods have led to the discovery of a number of new codes which are being submitted for publication. READ MORE

  4. 4. Geometries of Binary Constant Weight Codes

    University essay from Institutionen för ingenjörsvetenskap, fysik och matematik

    Author : Joakim Ekberg; [2006]
    Keywords : Information theory; Error-correcting codes; Constant weight codes; Informationsteori; Felrättande koder; Koder med konstant vikt;

    Abstract : This thesis shows how certain classes of binary constant weight codes can be represented geometrically using linear structures in Euclidean space. The geometric treatment is concerned mostly with codes with minimum distance 2(w - 1), that is, where any two codewords coincide in at most one entry; an algebraic generalization of parts of the theory also applies to some codes without this property. READ MORE

  5. 5. Cardinality for optical orthogonal codes with variable length and weight

    University essay from Institutionen för systemteknik

    Author : Erica Isaksson; [2006]
    Keywords : Optical Orthogonal Code; CDMA; Multilength OOC; Multiweight OOC;

    Abstract : To let many users benefit from the high speed communication in an optical fiber, a way to share the channel is needed. One way to share the channel between the users is the multiple access technique of Code Division Multiple Access, CDMA. This technique is based on coding. READ MORE