i-manager Publications

An SDR Architecture for Linearizing RF Power Amplifier with DPD Technique

Asif Ahmed*

Lecturer, Electrical and Communication Engineering, American International University, Bangladesh

Periodicity:December - February'2015
DOI : https://doi.org/10.26634/jele.5.2.3333

Abstract

In wireless transmission systems, non-ideal response of different functional components along with non linearity of power amplifier plays a major role in degrading the transmitter performance. Several parameters define the performance of a wireless, such as Adjacent Channel Power Ratio (ACPR), Error Vector Magnitude (EVM), spectral mask, etc., and the effect of non-ideal behavior of the transmitter affects these parameters. In many standards, these parameter specifications are defined such that the concern for transmitter linearization is very much relaxed. Standards like Terrestrial Trunked Radio (TETRA) specify strict regulation on these parameters. Therefore, the requirement of linearity is a great challenge for the design of a transmitter, and among these the Digital Pre-distortion (DPD) technique is a wellknown concept. In this paper, an appropriate architecture of SDR is presented for successful operation of the DPD technique. Both signal processing and physical layer architecture may be utilized for complete implementation of the SDR system.

Keywords

Software Defined Radio, Digital Pre-Distortion, Linearization, RF power amplifier.

How to Cite this Article?

Ahmed, A. (2015). An SDR Architecture for Linearizing RF Power Amplifier with DPD Technique. i-manager's Journal on Electronics Engineering, 5(2), 7-14. https://doi.org/10.26634/jele.5.2.3333

References

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An SDR Architecture for Linearizing RF Power Amplifier with DPD Technique

Abstract

Keywords

How to Cite this Article?

References

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