scholarly journals Performance Improvement of MIMO-OFDM Wireless Systems using PAPR Reduction Techniques

2012 ◽  
Vol 53 (18) ◽  
pp. 7-12
Author(s):  
Gamal MabroukAbdel-Hamid ◽  
Sahar Abdel-Rahman ◽  
Hala Gaber Farrag
Keyword(s):  
Performance Improvement ◽  
Wireless Systems ◽  
Papr Reduction ◽  
Reduction Techniques ◽  
Mimo Ofdm

scholarly journals A Novel SLM based PAPR reduction Technique in OFDM-MIMO System

2012 ◽  
Vol 2 (3) ◽  
pp. 41-46
Author(s):  
Er. Sukhjinder Singh ◽  
Er. Jagjit Malhotra ◽  
Er. Manwinder Singh
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Mimo System ◽  
Average Power ◽  
Fourth Generation ◽  
Papr Reduction ◽  
Mapping Technique ◽  
Promising Candidate ◽  
Broadband Wireless ◽  
Reduction Techniques ◽  
Mimo Ofdm

Orthogonal Frequency Division Multiplexing (OFDM) is annew method for fourth generation wireless communication.MIMO-OFDM has become a promising candidate for highperformance 4G broadband wireless communications.However, one main disadvantage of MIMO-OFDM is thehigh peak-to-average power ratio (PAPR) of the transmitter’soutput signal on different antennas. In this paper, we present anew noble SLM PAPR reduction techniques such asselective mapping technique and Partial transmit sequencetechniques and shows which of these PAPR reductiontechniques are more effective to reduce PAPR in OFDMMIMO.

A Review of PAPR Reduction Techniques for UFMC Waveform

2020 ◽  
Author(s):  
Farooq Sijal Shawqi ◽  
Lukman Audah ◽  
Ahmed Talaat Hammoodi ◽  
Mustafa Maad Hamdi ◽  
ALAA HAMID MOHAMMED
Keyword(s):  
Papr Reduction ◽  
Reduction Techniques

scholarly journals Investigation of Secret Key Capacity in MIMO-OFDM Wireless Systems

2018 ◽  
Vol 143 ◽  
pp. 776-785 ◽  
Author(s):  
Chakka Sai Pradeep ◽  
Ramanathan R
Keyword(s):  
Wireless Systems ◽  
Secret Key ◽  
Mimo Ofdm

scholarly journals A Novel Hybrid Precoding-Companding Technique for Peak-to-Average Power Ratio Reduction in 5G and beyond

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1410
Author(s):  
Mohamed Mounir ◽  
Mohamed B. El_Mashade ◽  
Salah Berra ◽  
Gurjot Singh Gaba ◽  
Mehedi Masud
Keyword(s):  
Computational Complexity ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Average Power ◽  
Papr Reduction ◽  
Power Ratio ◽  
Error Vector Magnitude ◽  
Hybrid Precoding ◽  
High Power Amplifier ◽  
Reduction Techniques

Several high-speed wireless systems use Orthogonal Frequency Division Multiplexing (OFDM) due to its advantages. 5G has adopted OFDM and is expected to be considered beyond 5G (B5G). Meanwhile, OFDM has a high Peak-to-Average Power Ratio (PAPR) problem. Hybridization between two PAPR reduction techniques gains the two techniques’ advantages. Hybrid precoding-companding techniques are attractive as they require small computational complexity to achieve high PAPR reduction gain. Many precoding-companding techniques were introduced to increasing the PAPR reduction gain. However, reducing Bit Error Rate (BER) and out-of-band (OOB) radiation are more significant than increasing PAPR reduction gain. This paper proposes a new precoding-companding technique to better reduce the BER and OOB radiation than previous precoding-companding techniques. Results showed that the proposed technique outperforms all previous precoding-companding techniques in BER enhancement and OOB radiation reduction. The proposed technique reduces the Error Vector Magnitude (EVM) by 15 dB compared with 10 dB for the best previous technique. Additionally, the proposed technique increases high power amplifier efficiency (HPA) by 11.4%, while the best previous technique increased HPA efficiency by 9.8%. Moreover, our proposal achieves PAPR reduction gain better than the most known powerful PAPR reduction technique with a 99% reduction in required computational complexity.

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