Paper Info
Title
Energy efficient peak power reduction in OFDM with amplitude predistortion aided by orthogonal pilots.
Abstract
The high Peak-to-Average Power Ratio (PAPR) is a main drawback of Orthogonal Frequency Division Multiplexing (OFDM) systems. We propose a twostep technique to reduce the PAPR consisting of a metric-based constellation extension method, such as Simple Amplitude Predistortion (SAP) algorithm, aided by Orthogonal Pilot Sequences (OPS) in a previous step, where we also provide a low-complex implementation of OPS scheme. We show that our proposal, named OP-SAP, outperforms previous approaches in terms of PAPR reduction, due to joining the benefits of Orthogonal Pilots with SAP algorithm. Moreover, it is energy efficient within two aspects: transmitted energy and implementation energy. OP-SAP saves up to 57% of transmitted energy per predistorted symbol compared to SAP. Regarding implementation energy, PAPR reduction techniques introduce some additional computational complexity, which requires extra cycles in the processor that demand energy consumption. We present an exhaustive analysis on computational power cost that shows the low power consumption of OP-SAP compared to other methods as SeLected Mapping (SLM), what yields a remarkable energy saving in its practical implementation1.
Year
DOI
Venue
2013
10.1109/TCE.2013.6490240
IEEE Trans. Consumer Electronics
Keywords
Field
DocType
Peak to average power ratio,Predistortion,Transmitters,Complexity theory,Receivers,Proposals
Extension method,Efficient energy use,Computer science,Electronic engineering,Amplitude,Energy consumption,Orthogonal frequency-division multiplexing,Predistortion,Power consumption,Computational complexity theory
Journal
Volume
Issue
ISSN
59
1
0098-3063
Citations 
PageRank 
References 
8
0.57
10
Authors
2
Name
Order
Citations
PageRank
Martha C. Paredes Paredes1183.54
M. Julia Fernández-Getino García2428.78