Robust Low-Sidelobe Transmit Beamforming under Peak-to-Average-Power Ratio Constraint [PDF]
Sensors, 2023 Transmit beamforming (TBF) provides the capability of focusing illuminating power in the desired directions while reducing the emitting power in undesired directions.
Lingping Cai +4 more
doaj +2 more sources
Optical-OFDM VLC System: Peak-to-Average Power Ratio Enhancement and Performance Evaluation [PDF]
SensorsVisible Light Communication (VLC) systems are favoured for numerous applications due to their extensive bandwidth and resilience to electromagnetic interference.
Yasser A. Zenhom +3 more
doaj +2 more sources
Low Spatial Peak-to-Average Power Ratio Transmission for Improved Energy Efficiency in Massive MIMO Systems [PDF]
Sensors, 2021 A significant portion of the operating power of a base station is consumed by power amplifiers (PAs). Much of this power is dissipated in the form of heat, as the overall efficiency of currently deployed PAs is typically very low.
Sina Rezaei Aghdam, Thomas Eriksson
doaj +2 more sources
Secure OFDM with Peak-to-Average Power Ratio Reduction Using the Spectral Phase of Chaotic Signals [PDF]
Entropy, 2021 In this paper, a new physical layer security technique is proposed for Orthogonal Frequency Division Multiplexing (OFDM) communication systems. The security is achieved by modifying the OFDM symbols using the phase information of chaos in the frequency ...
Mohamad F. Haroun, T. Aaron Gulliver
doaj +2 more sources
A Novel Hybrid Precoding-Companding Technique for Peak-to-Average Power Ratio Reduction in 5G and beyond [PDF]
Sensors, 2021 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).
Mohamed Mounir +4 more
doaj +2 more sources
Clipping Noise Compensation for Overlapped Time Domain Multiplexing toward Low Peak-to-Average Power Ratio [PDF]
SensorsOverlapped Time Domain Multiplexing (OvTDM) is a high-rate transmission technology that employs the idea of superposition coded modulation (SCM) scheme for signal generation, aiming to achieve maximum channel capacity sharing.
Chongda Huang +3 more
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Power Efficiency Improvements through Peak-to-Average Power Ratio Reduction and Power Amplifier Linearization [PDF]
EURASIP Journal on Advances in Signal Processing, 2007 Many modern communication signal formats, such as orthogonal frequency-division multiplexing (OFDM) and code-division multiple access (CDMA), have high peak-to-average power ratios (PARs).
Zhou G Tong, Qian Hua, Chen Ning
doaj +4 more sources
A Low Complexity Partial Transmit Sequence for Peak to Average Power Ratio Reduction in OFDM Systems [PDF]
Radioengineering, 2011 Partial transmit sequence (PTS) is one of the most important techniques for reducing the peak to average power ratio (PAPR) in OFDM systems. This paper presents a low complexity PTS scheme by applying a new phase sequence.
P. Varahram, B. M. Ali
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A review of Peak to Average Power Ratio Reduction Schemes in OFDM Systems [PDF]
Kirkuk Journal of Science, 2022 This paper is concerned with the Orthogonal Frequency Division Multiplexing (OFDM) system that is adopted by a wireless communication system for transmitting multicarrier modulated signals simultaneously with robustness against interference and noise ...
Bana Shekh Faraj, Abdulrahman Siddiq
doaj +1 more source
A Novel Companding Technique to Reduce High Peak to Average Power Ratio in OFDM Systems
IEEE Access, 2021 The reduction of the high peak-to-average-power ratio (PAPR) is important to the efficiency of the orthogonal frequency division multiplexing (OFDM) technique.
Abdulwahid Mohammed +3 more
doaj +1 more source