Spectral Correlation of OFDM Signals Related to Their PLC Applications
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چکیده
The cyclostationarity of the OFDM signal induced by the cyclic prefix can be employed in a manner of blind channel identification for adaptive subcarrier modulation level and/or power allocation in an adaptive OFDM system, according to channel conditions, promising the potential for a high-speed power line communications. For that object, the spectral correlation characterization of the OFDM signals is performed by a matrix-based stochastic method based on Markov chain signal representation. Exact analytical expression for their spectral correlation function is derived applying the proposed method, the characteristic cyclic features according to the cyclic prefix presence are analyzed and some computed and graphed results are presented.
منابع مشابه
Performance analysis of Piecewise linear Companding with various precoders for PAPR Reduction of OFDM Signals
1Professor,Dept.of ECE,GMR Institute of Technology,Rajam,AP,India 2Professor, Dept.of ECE ,GMR Institute of Technology,Rajam, AP,India 3Assistant Professor, Dept.of ECE ,GMR Institute of Technology,Rajam, AP,India ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Orthogonal Frequency Division Mult...
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