scholarly journals Time-domain envelope measurements for characterization and behavioral modeling of nonlinear devices with memory

2006 ◽  
Vol 54 (8) ◽  
pp. 3219-3226 ◽  
Author(s):  
F. Macraigne ◽  
T. Reveyrand ◽  
G. Neveux ◽  
D. Barataud ◽  
J.-M. Nebus ◽  
...  
Keyword(s):  
Time Domain ◽  
Behavioral Modeling ◽  
Nonlinear Devices ◽  
With Memory

Research on Modeling Methods of Power Amplifier with Memory Effect in Broadband Communication

2014 ◽  
Vol 687-691 ◽  
pp. 4060-4063
Author(s):  
Lu Sun ◽  
Long Long Xue ◽  
Jia Li Wang ◽  
Chun Yang Zhou
Keyword(s):  
Memory Effect ◽  
Power Amplifier ◽  
Polynomial Model ◽  
Behavioral Modeling ◽  
Design System ◽  
Behavioral Models ◽  
Electric Characteristic ◽  
Memory Polynomial ◽  
With Memory ◽  
Frequency Power

Memory effect of power amplifier (PA) due to broadband signals which adopt new modulation technique is becoming obvious, and worsening the linearity of PA. Behavioral modeling for RF (Radio Frequency) power amplifier is indispensable to design digital pre-distortion system by which we can promote the efficiency of PA. According to the simulation data in the software of ADS (Advanced Design System), behavioral models of MRF21085 amplifier can be established by MATLAB. Comparison of memory polynomial model and ADS simulation of MRF21085 amplifier demonstrate memory polynomial model can represent the electric characteristic of it exactly.

Behavioral modeling and digital pre-distortion techniques for RF PAs in a 3 × 3 MIMO system

2019 ◽  
Vol 11 (10) ◽  
pp. 989-999 ◽  
Author(s):  
Mahmoud Alizadeh ◽  
Peter Händel ◽  
Daniel Rönnow
Keyword(s):  
Frequency Domain ◽  
Time Domain ◽  
Mimo Systems ◽  
Mimo System ◽  
Parameters Estimation ◽  
Behavioral Modeling ◽  
Type Model ◽  
Rf Power Amplifiers ◽  
Model Errors ◽  
Frequency Domains

AbstractModern telecommunications are moving towards (massive) multi-input multi-output (MIMO) systems in 5th generation (5G) technology, increasing the dimensionality of the systems dramatically. In this paper, the impairments of radio frequency (RF) power amplifiers (PAs) in a 3 × 3 MIMO system are compensated in both the time and the frequency domains. A three-dimensional (3D) time-domain memory polynomial-type model is proposed as an extension of conventional 2D models. Furthermore, a 3D frequency-domain technique is formulated based on the proposed time-domain model to reduce the dimensionality of the model, while preserving the performance in terms of model errors. In the 3D frequency-domain technique, the bandwidth of the system is split into several narrow sub-bands, and the parameters of the model are estimated for each sub-band. This approach requires less computational complexity, and also the procedure of the parameters estimation for each sub-band can be implemented independently. The device-under-test consists of three RF PAs including input and output cross-talk channels. The proposed techniques are evaluated in both behavioral modeling and digital pre-distortion (DPD) perspectives. The experimental results show that the proposed DPD technique can compensate the errors of non-linearity and memory effects in the both time and frequency domains.

Broadband Time-Domain Measurement System for the Characterization of Nonlinear Microwave Devices With Memory

2010 ◽  
Vol 58 (4) ◽  
pp. 1038-1045 ◽  
Author(s):  
Mouhamad Abouchahine ◽  
Alaa Saleh ◽  
Guillaume Neveux ◽  
Tibault Reveyrand ◽  
Jean-Pierre Teyssier ◽  
...  
Keyword(s):  
Measurement System ◽  
Time Domain ◽  
Microwave Devices ◽  
With Memory
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