Behavior and techniques for improving performance of OFDM systems for wireless communications
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Date
2015-01
Authors
Barakabitze, Alcardo Alex
Ali, Md. Abbas
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Abstract
Orthogonal frequency division multiplexing (OFDM) is a special case of multicarrier transmission which
transmits a stream of data over a number of lower data rate subcarriers. OFDM splits the total transmission bandwidth
into a number of orthogonal and non-overlapping subcarriers and transmit the collection of bits called symbols in
parallel using these subcarriers. This paper gives a total insight of various Peak -to Average Power Reduction (PAPR)
techniques and principles of OFDM systems used in wireless communications. The research paper places a focus also
on OFDM behaviors and techniques like Carrier Frequency Offset (CFO) estimation that improves performance of
OFDM for wireless communications. Finally, the paper provides a number of wireless communication standards and
many of the applications where OFDM systems are used.
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Keywords
OFDM, Peak-to-Average Power Reduction (PAPR), Inter-Carrier Interference (ICI), Channel estimation, Cyclic Prefix, Bit Error Ratio (BER)