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Information × Registration Number 0208U004828, 0106U002047 , R & D reports Title Spectrum-effective wideband radioaccess systems for "last mile" appication. popup.stage_title Head M.E. Ilchenko, Registration Date 19-12-2008 Organization Research Institute of Telecommunications National technical university of Ukraine "KPI" popup.description2 The purpose of job are research of factors influencing on spectral efficiency of a broadband radioaccess systems (BRS), development of effective algorithms, technical decisions and structurally functional principles which will form a basis of construction of new high-speed systems. The basic idea of job will consist in development of effective algorithms for adaptation of system to change of operating conditions, methods of system synchronization with OFDM modulation, energetically effective noiseproof codes and architectural decisions which provide spectral efficiency BRS. As a result of execution of job: adaptation algorithms to change of operating conditions the systems which were switched on linear algorithms of an optimum choice of a modulation kind and noiseproof coding speed and adaptive management by target capacity of user's stations are developed; On the basis of the detailed analysis effective synchronization methods of systems with OFDM modulation are developed, for chosen by criterion equipment rooms expense/accuracy of a method of the maximal plausibility for synchronization on pilot symbols the prototype in language VHDL is developed; the algorithm of decoding the convolution turbo codes is developed, allowing to achieve the greater efficiency of decoding in comparison with Viterby algorithm at optimum expenses of computing resources; the structurally functional principles of BRS construction basing exclusively on IР-technologies and development completely responding modern lines of telecommunications are developed. Product Description popup.authors popup.nrat_date 2020-04-02 Close