The New Peak-to-Average Power Reduction Algorithm in the OFDM System

2006 ◽  
Vol 41 (4) ◽  
pp. 517-525 ◽  
Author(s):  
Chau Yun Hsu ◽  
Horng Guo Do
Keyword(s):  
Average Power ◽  
Power Reduction ◽  
Reduction Algorithm ◽  
Ofdm System

Peak Power Reduction through Conic Optimized Sigma Clipping and Filtering

2014 ◽  
Vol 550 ◽  
pp. 220-227
Author(s):  
V. Nandalal ◽  
S. Sophia ◽  
B. Gayathri
Keyword(s):  
Bit Error Rate ◽  
Power Efficiency ◽  
Peak Power ◽  
Hardware Implementation ◽  
Average Power ◽  
Power Reduction ◽  
Ofdm System ◽  
Transmitter Power ◽  
Peak Power Reduction ◽  
Clipping And Filtering

High Peak to Average Power Ratio (PAPR) of OFDM reduces transmitter power efficiency and increases complexity in hardware implementation. In the paper, the high PAPR is reduced using optimized Standard Deviation based Iterative Clipping and Filtering (SD-ICF).The proposed method achieves a greater reduction in PAPR in a few iterations with reduced out-of-band distortion and bit error rate when compared over classical clipping techniques.Also, the effects of oversampling on the performance of proposed OFDM system is discussed.

Design and Simulation of OFDM for BPSK, QPSK and QAM with Peak Power Reduction Using Clipping Technique

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Arun Kumar
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Peak Power ◽  
Average Power ◽  
Power Reduction ◽  
Frequency Division ◽  
Ofdm System ◽  
High Data ◽  
Data Rates ◽  
Peak Power Reduction ◽  
Clipping Technique

AbstractDue to the increase in demand for high data rates in mobile communication, orthogonal frequency division multiplexing (OFDM) system is employed in many applications. It efficiently overcomes the effect of Inter-symbol Interference caused due to the fading of the channel, but Peak to Average Power Ratio (PAPR) is unitary of the disadvantages in OFDM System. In the stage-I, the OFDM system is designed with different modulation schemes like QAM-16, BPSK, and QPSK. In the latter stage, we work on the reduction of PAPR by using a clipping technique and we establish a significant reduction in PAPR as compared to the conventional clipping technique.

scholarly journals PERFORMANCE IMPROVEMENT OF OFDM SYSTEM BY PEAK TO AVERAGE POWER REDUCTION THROUGH PULSE SHAPING TECHNIQUE

2010 ◽  
Vol 01 (04) ◽  
pp. 202-206
Author(s):  
Susmita Das ◽  
◽  
Srabani Mohapatra ◽  
KalaPraveen Bagadi ◽  
◽  
...  
Keyword(s):  
Performance Improvement ◽  
Pulse Shaping ◽  
Average Power ◽  
Power Reduction ◽  
Ofdm System ◽  
Shaping Technique

scholarly journals An Efficient DWT-DAPM Technique for PAPR Reduction in OFDM System

2020 ◽  
Vol 9 (3) ◽  
pp. 1691-1696 ◽  
Keyword(s):  
Amplitude Modulation ◽  
Fading Channel ◽  
Orthogonal Frequency Division Multiplexing ◽  
Average Power ◽  
Gaussian Model ◽  
Channel Noise ◽  
Discrete Wavelet ◽  
Ofdm System ◽  
Flat Fading ◽  
Frequency Selective

In this paper, Discrete Wavelet Transform (DWT) Orthogonal Frequency Division Multiplexing (OFDM) system is compared with Discrete Cosine Transform (DCT) and Discrete Fourier Transform (DFT) OFDM systems. The channel noise is modelled with A white Gaussian Model (AWGN), the fading is the impairment in the channel and modelled by Rayleigh fading which is frequency selective fading channel and flat fading channel. The comparisons of Peak to Average Power Ratio (PAPR) and Bit Error Rate (BER) are made using modulation techniques such as Differential Amplitude and Phase Modulation (DAPM), Quadrature Amplitude Modulation (QAM) and Pulse Amplitude Modulation (PAM). Simulation results shows that PAPR is 4.497 dB for DWT-DAPM combination, 4.684 dB for DWT-QAM combination and 6.211 dB for DWT- PAM combination at 10-3 Complementary Cumulative Distributive Function (CCDF).The performance Analysis with the combination of DFT, DCT with DAPM, QAM and PAM are also compared. The BER is 0.01816, 0.01806 at 20 dB SNR in frequency selective channel, flat fading channel for DWT-DAPM and for DWT- QAM, AWGN channel BER is 0.01765 at 20dB SNR.

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