PAPR Reduction for OFDM System using Companding Technique
نویسندگان
چکیده
Communication is one of the important aspects of life to exchange their information and thoughts. With the advancement in age and user's growing demands, there has been rapid exponential growth in the field of communications. Signals, which were initially sent in the analog domain, are being sent more and more in the digital domain these days. For better transmission, even single – carrier waves are being replaced by multi – carriers. Multi – carrier systems like CDMA and OFDM (Orthogonal Frequency Division Multiplex) are now – a – days being implemented commonly. One of the challenging issues for Orthogonal Frequency Division Multiplexing (OFDM) system is its high Peak-toAverage Power Ratio (PAPR). That is the time domain OFDM signal which is a sum of several sinusoids leads to high peak to
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In the OFDM communication system the main disadvantage factor is Peak Average to Power Ratio (PAPR) which limits the performance of the overall system. To limit this factor in the OFDM system there are so many techniques are there, depends on the nature of the system like clipping, Partial transmission, Selective mapping, Companding transform etc, in these technique companding technique is the ...
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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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