Papr reduction in cp-ofdm (5g) using hybrid technique
ACTA POLYTECHNICA(2023)
摘要
The Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) is a 5G multi -carrier waveform that offers great data speeds and improvements in spectrum utilisation. The primary CP-OFDM's weakness is its excessive peak-to-average power ratio (PAPR), which is a characteristic of all multicarrier modulation techniques. We study the application of a hybrid technique approach how to lower the peak to average power ratio (PAPR) in a CP-OFDM system. We also evaluated the outcomes of peak to average power ratio (PAPR) decrease in CP-OFDM, utilising a hybrid technique with Group Codeword Shift (GCS), Median Codeword Shift, Selective Codeword Shift (SCS), and Conventional CP-OFDM. When compared to the non-hybrid technique, the simulation results indicate that the hybrid approach is superior in reducing the peak PAPR by more than 65 percent.
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关键词
Cyclic prefix orthogonal frequency division multiplexing (CP-OFDM),peak to average power ratio (PAPR),hybrid technique,group codeword shift (GCS)
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