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Multiuser OFDM System For Wireless Information And Power Transfer


Author(s):

Atul Mugale , DPCOEP; Shivani Pandita, DPCOEP

Keywords:

OFDM, PAPR, PS, TS

Abstract:

Simultaneous information and power transfer over the wireless channels potentially offers great convenience to mobile users. In wireless communication information and power transfer is very challenging task. To perform this task it is important to harvest energy and information decoding. Therefore for wireless communication system needs to developed technique which is suited for wideband and high data rate transmissions. Orthogonal frequency division multiplexing (OFDM) is digital transmission technique developed into a popular scheme for wideband communication systems. So in this paper we study the optimal design for simultaneous wireless information and power transfer (SWIPT) in downlink multiuser OFDM systems. At the receiver side, due to the practical limitation of circuits for harvesting energy from radio signals are not yet able to decode the carried information directly, so we applied time switching (TS) scheme for the information decoding (ID) and power splitting (PS) scheme for the harvesting energy. Using MATLAB, simulation of OFDM was done with different modulation techniques using different transform techniques. The digital modulation schemes such as QPSK and QAM’s were selected to evaluate the performance of the designed OFDM system. The performances of the multiple schemes were compared in the term of peak to average power ratio (PAPR), TS and PS graphs. The use of orthogonal frequency division multiplexing (OFDM) technique provides better solution for the multi-path fading, less spectral efficiency & lower bit rate capacity problems.


Other Details:

Manuscript Id :IJSTEV2I1060
Published in :Volume : 2, Issue : 1
Publication Date: 01/08/2015
Page(s): 157-160
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