A Novel Nonlinear Companding Transform for PAPR Reduction in Lattice-OFDM System
-
Siming Peng
,
Yuehong Shen
Abstract
In this paper, a novel companding scheme is proposed to reduce the peak-to-average power ratio (PAPR) of lattice orthogonal frequency division multiplexing (LOFDM) system. By transforming the statistics of original signals into a specified distribution form, which is defined by a continuous sine function, this scheme can achieve a simple companding form as well as an improved PAPR and bit-error-rate (BER) performance. Moreover, by introducing the variable companding parameters in the desired probability density function (PDF), a great design flexibility in the companding form and an effective trade-off between the PAPR reduction and BER performance can be achieved to satisfy various system demands. The general formulas of the proposed scheme are derived and a theoretical analysis regarding the achievable transform gain and the selection criteria of companding parameters are also conducted. Simulation results show that the proposed scheme can substantially outperform the conventional μ-law companding, exponential companding (EC), piecewise companding (PC) in terms of PAPR reduction, BER performance and bandwidth efficiency.
©2014 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Frontmatter
- Laudatio Prof. Groll zum 90. Geburtstag
- Nachruf Prof. Dr.-Ing. Heinz Chaloupka
- Reference Plane Transformation of Continuous Mode Terminations for Broadband Power Amplifiers
- Potential of Coplanar X-band GaN-MMIC Power Amplifiers
- High Directivity Microstrip Coupler with Asymmetric Structure
- Three-Pole Tunable Bandpass Filters With Constant Fractional Bandwidth Using Mixed Comb-line Resonators
- UWB Band-notched Adjustable Antenna Using Concentric Split-ring Slots Structure
- Evaluation of Cathode Heater Assembly for 42 GHz, 200 kW Gyrotron
- Optical Solitons in Magneto-optic Waveguides with Spatio-temporal Dispersion
- Outage Analysis of Dual-hop Cognitive Networks with Relay Selection over Nakagami-m Fading Environment
- A Novel Nonlinear Companding Transform for PAPR Reduction in Lattice-OFDM System
- On the First and the Second Order Statistics of the Capacity of κ-μ Fading Channels
- On the Performance of the Golden Code in the Presence of Channel Estimation Error in Correlated MIMO Rayleigh Fading Channels
- Evaluations of SSC Diversity Receiver over EGK Fading Channels
- New Tone Reservation Technique for Peak to Average Power Ratio Reduction
Articles in the same Issue
- Frontmatter
- Laudatio Prof. Groll zum 90. Geburtstag
- Nachruf Prof. Dr.-Ing. Heinz Chaloupka
- Reference Plane Transformation of Continuous Mode Terminations for Broadband Power Amplifiers
- Potential of Coplanar X-band GaN-MMIC Power Amplifiers
- High Directivity Microstrip Coupler with Asymmetric Structure
- Three-Pole Tunable Bandpass Filters With Constant Fractional Bandwidth Using Mixed Comb-line Resonators
- UWB Band-notched Adjustable Antenna Using Concentric Split-ring Slots Structure
- Evaluation of Cathode Heater Assembly for 42 GHz, 200 kW Gyrotron
- Optical Solitons in Magneto-optic Waveguides with Spatio-temporal Dispersion
- Outage Analysis of Dual-hop Cognitive Networks with Relay Selection over Nakagami-m Fading Environment
- A Novel Nonlinear Companding Transform for PAPR Reduction in Lattice-OFDM System
- On the First and the Second Order Statistics of the Capacity of κ-μ Fading Channels
- On the Performance of the Golden Code in the Presence of Channel Estimation Error in Correlated MIMO Rayleigh Fading Channels
- Evaluations of SSC Diversity Receiver over EGK Fading Channels
- New Tone Reservation Technique for Peak to Average Power Ratio Reduction
