scholarly journals A Novel Companding Technique to Reduce High Peak to Average Power Ratio in OFDM Systems

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 35217-35228
Author(s):  
Abdulwahid Mohammed ◽  
Tawfik Ismail ◽  
Amin Nassar ◽  
Hassan Mostafa
Keyword(s):  
Average Power ◽  
High Peak ◽  
Power Ratio ◽  
Ofdm Systems

scholarly journals AN EFFICIENT METHOD FOR PAPR REDUCTION IN OFDM SYSTEMS WITH REDUCED COMPLEXITY

2013 ◽  
pp. 96-100
Author(s):  
PRITANJALI KUMARI ◽  
US TRIAR
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Average Power ◽  
High Peak ◽  
Papr Reduction ◽  
Power Calculation ◽  
Frequency Division Multiplexing ◽  
Power Ratio ◽  
Frequency Division ◽  
Ofdm Systems ◽  
Reduced Complexity

Orthogonal Frequency Division Multiplexing (OFDM), widely used in digital wireless communication, has a major drawback of high Peak to Average Power Ratio (PAPR). A reduced complexity partial transmit sequence (PTS) scheme has been proposed to solve high peak to average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) system. In the proposed PTS scheme, a function is generated by summing the power of time domain samples at time ‘n’ in each sub blocks, known as “Hn”.Only those samples, having Hn greater than or equal to a preset threshold value (αT) are used for peak power calculation during the process of selecting a candidate signal with the lowest PAPR for transmission. As compared to conventional PTS scheme, the proposed scheme achieves almost the same PAPR reduction performance with much lower computational complexity.

scholarly journals Optimized Adaptive Huffmann Coding For Paper Reduction in OFDM Systems

2013 ◽  
Vol 2 (04) ◽  
pp. 13-18
Author(s):  
Dr. Atul Suryavanshi
Keyword(s):  
Average Power ◽  
High Peak ◽  
Huffman Coding ◽  
Power Ratio ◽  
Ofdm Systems ◽  
Main Defect ◽  
Simulation Results

The main defect of OFDM systems is its high peak-to-average power ratio (PAPR). To decrease PAPR, Adaptive Huffman coding is essential. Encoding is transferred by two encoding techniques Huffman coding and Adaptive Huffman coding at the transmitter side. Mapping is done by QAM 16 and PSK 16.The PAPR results of Huffman and adaptive Huffman coding with QAM 16 and PSK 16 is compared. Simulation results shows that the Adaptive Huffman coding along with QAM 16 produces fruitful results in comparison with Huffman coding and adaptive Huffman coding with PSK 16.

scholarly journals Peak-to-average power ratio reduction based on Cross-Correlation in OFDM systems

2014 ◽  
Author(s):  
Mohsen Kazemian ◽  
Pooria Varahram ◽  
Shaiful Jahari B. Hashim ◽  
Borhanuddin B. Mohd. Ali ◽  
Somayeh Mohammady ◽  
...  
Keyword(s):  
Cross Correlation ◽  
Average Power ◽  
Power Ratio ◽  
Ofdm Systems ◽  
Power Ratio Reduction ◽  
Ratio Reduction

scholarly journals Peak-to-Average Power Ratio Reduction Using New Swarm Intelligence Algorithm in OFDM Systems

2019 ◽  
Vol 32 ◽  
pp. 831-839 ◽  
Author(s):  
Amhaimar Lahcen ◽  
Attari kamal ◽  
Halaoui Mustapha ◽  
Elyaakoubi Ali ◽  
Ahyoud Saida ◽  
...  
Keyword(s):  
Swarm Intelligence ◽  
Average Power ◽  
Power Ratio ◽  
Ofdm Systems ◽  
Intelligence Algorithm ◽  
Power Ratio Reduction ◽  
Swarm Intelligence Algorithm ◽  
Ratio Reduction
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