Paper Info
Title
A novel accurate and low-complexity behavior model for IMUX-HPA-OMUX of LEO satellite based on iterative compensation of cascade modeling errors
Abstract
Next generation satellite communications (NGSC) evolved by 5G NR combination is the hot issue in recent researches. For the conditions of new frequency (Ku/Ka/Q/V) and much more broadband (>100 MHz) for satellite mobile communications, the obvious nonlinearity by Input Multiplexing (IMUX) filter, High Power Amplifier (HPA), and Output Multiplexing (OMUX) filter will cause serious signals degradation. Traditional behavioral modeling methods of IMUX filter, HPA, andOMUXfilter (IHO) are relatively independent of each other, which is difficult to quantitatively evaluate intrinsic modeling errors and cumulative modeling errors. That makes modeling errors of IHO cannot be compensated accurately. In this paper, we are the first to exploit a quantitative evaluation of cascade modeling errors for IHO. A novel accurate and low-complexity behavior model for IHO of LEO satellite based on the iterative compensation of cascade modeling errors (ICCE-IHO) is proposed. Based on the normalized least mean square (NLMS) algorithm, the ICCE-IHO model realizes accurate modeling and low-complexity. Experimental results show that the ICCE-IHO model can achieve a maximum 0.67 dB improvement in Normalized Mean Square Error (NMSE), a maximum 2.24 dB improvement in Adjacent Channel Error Power Ratio (ACEPR), and the hardware resource consumption is reduced by 28%.
Year
DOI
Venue
2021
10.1587/elex.18.20210429
IEICE ELECTRONICS EXPRESS
Keywords
DocType
Volume
next generation satellite communications, behavioral modeling, nonlinearity, input multiplexing filter, high power amplifier, output multiplexing filter
Journal
18
Issue
ISSN
Citations 
24
1349-2543
0
PageRank 
References 
Authors
0.34
0
8
Name
Order
Citations
PageRank
Zhong-liang Deng16928.85
Hao Liu200.34
Ke Wang300.68
Wenliang Lin424.10
Yang Liu500.68
Xiaoyi Yu612.39
Mohan Zhang700.34
Bofei Wang800.34