Companding Schemes for Reducing PAPR in OFDM System: A Review
-
Ashish Goel
and
Prateek Mathur
Abstract
High PAPR poses a large hindrance to high data rate Orthogonal Frequency Division Multiplexing (OFDM) signals. A companding transform converts the Probability distribution function (PDF) of the transmitted OFDM signal in a way which reduces the Peak-to-average power-ratio (PAPR). In this paper, we have performed the study of companding techniques and analyzes the PAPR and BER performances of these schemes. Here, we have considered μ-law companding, exponential companding, trapezoidal companding (TC) and trigonal companding for comparison. In this paper, we have demonstrated that μ-law companding, exponential companding and trigonal companding schemes have no adaptability in designing the companding function, and along these lines an exchange off between BER performance and PAPR reduction ability is unrealistic to accomplish. However, TC scheme has two parameters (a and b) to design the companding function and hence a trade-off between PAPR reduction capability and BER performance is possible to achieve. BER performance and PAPR reduction capabilities of the scheme under consideration are evaluated and compared through computer simulations. We have also presented an approach to obtain the minimum BER and PAPR of TC and found out the values of design parameters (a and b) for which TC scheme has minimum BER and PAPR.
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Articles in the same Issue
- Frontmatter
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- Performance Evaluation of DPSK System with Different Combination of Hybrid Optical Amplifiers by Using Equal and Unequal Channel Spacing
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- Design and Performance Analysis of MZI Based 2×2 Reversible XNOR Logic Gate
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- Design and Implementation of Electro-Optic 2×2 Switch and Optical Gates using MZI
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- PIIN Cancellation Using a Novel Receiving Architecture for Spectral/Spatial SAC-OCDMA System
- Design of Multiservice Code (MS) in Spectral/Temporal/Spatial Domain for OCDMA System
- Enhanced Performances of SAC-OCDMA System by Using Polarization Encoding
- PAPR Reduction in MIMO-OFDM System Using SLM Without SI
- Companding Schemes for Reducing PAPR in OFDM System: A Review
Articles in the same Issue
- Frontmatter
- Amplifiers
- Automatic Gain-Controlled HOA with Residual Pumping
- Performance Evaluation of DPSK System with Different Combination of Hybrid Optical Amplifiers by Using Equal and Unequal Channel Spacing
- Devices
- Investigation of Photonic Integrated Circuits with Low-Loss Bragg Gratings
- Design and Performance Analysis of MZI Based 2×2 Reversible XNOR Logic Gate
- Design and Numerical Analysis of an All-optical 4-channel Power Splitter in E, S, C, L, and U Bands via Nano-line Defects in Photonic Crystal
- Tunable High Performance 16-Channel Demultiplexer on 2D Photonic Crystal Ring Resonator Operating at Telecom Wavelengths
- Fibers
- Experimental Investigation of Intensity Modulator/Direct Detection (IM/DD) Optical OFDM System with Fiber Bragg Grating (FBG)
- Integrated Optics
- A Novel Proposal for All-Optical OR/AND Gate Using Nonlinear Photonic Crystal Ring Resonators
- Design and Implementation of Electro-Optic 2×2 Switch and Optical Gates using MZI
- Networks
- A Survey of Dynamic Bandwidth Assignment Schemes for TDM-Based Passive Optical Network
- Systems
- PIIN Cancellation Using a Novel Receiving Architecture for Spectral/Spatial SAC-OCDMA System
- Design of Multiservice Code (MS) in Spectral/Temporal/Spatial Domain for OCDMA System
- Enhanced Performances of SAC-OCDMA System by Using Polarization Encoding
- PAPR Reduction in MIMO-OFDM System Using SLM Without SI
- Companding Schemes for Reducing PAPR in OFDM System: A Review
