Reduction of PAPR in SFBC-OFDM System Using Clipping and Differential Scaling

Provided by: International Journal of Emerging Technology and Advanced Engineering (IJETAE)
Topic: Mobility
Format: PDF
Orthogonal Frequency-Division Multiplexing (OFDM) is a well-known technique for transmission of high rate data over broadband frequency-selective channels that mitigate Inter-Symbol Interference (ISI) caused by the delay spread of wireless channels. Space Frequency Block Coded technique (SFBC) is a spatial diversity technique used to achieve full transmission diversity with higher capacity. The major drawbacks of OFDM are high Bit Error Rate (BER) and high Peak-to-Average Power Ratio (PAPR). Space Frequency Block Coded OFDM system (SFBC-OFDM) is used to reduce the BER and transmit the data. In this paper, the performance of BER vs. SNR in normal OFDM is compared to that of SFBC-OFDM systems using simulation.

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