Paper Info
Title
High-Efficiency Optimization Algorithm of PMEPR for OFDM Integrated Radar and Communication Waveform Based on Conjugate Gradient
Abstract
The tone reservation (TR) approach is mainly adopted to reduce the peak-to-mean envelope power ratio (PMEPR) of orthogonal frequency division multiplexing (OFDM) waveform with low TR ratio (TRR) in classic 4G communication systems. However, for the OFDM integrated radar and communication waveform, high TRR is necessary to simultaneously maintain the radar detection performance as well as communication performance. For cases with high TRR, the traditional waveform optimization algorithms have low execution efficiency and a poor PMEPR convergence level, and thus a new algorithm is needed. This paper proposes a new PMEPR optimization algorithm based on conjugate gradient. Firstly, by introducing the concept of L-p-norm, the PMEPR of the OFDM waveform is accurately remodeled as the objective function of the waveform optimization problem. Secondly, the conjugate gradient of the objective function is analytically derived to form the basis of the efficient PMEPR optimization. Finally, a PMEPR optimization algorithm based on the Polak- Ribiere-Polyak (PRP) conjugate gradient is proposed. The simulation results verified the proposed algorithm in terms of optimization efficiency, as well as convergence level, and the initial experimental results suggested the practicality of the proposed algorithm.
Year
DOI
Venue
2022
10.3390/rs14071715
REMOTE SENSING
Keywords
DocType
Volume
integrated radar and communications, orthogonal frequency division multiplexing, peak-to-mean envelope power ratio, conjugate gradient
Journal
14
Issue
ISSN
Citations 
7
2072-4292
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Juan Rong100.68
Zhipeng Liu2366.61
Yingjie Miao300.68