ScholarLens Back to search
2005•Unpublished venueRequires access

An application of a digital predistortion linearizer to CDMA HPA's

Sungbin Im, Edward J. Powers

Open publisher page 2 citations

Abstract

The high power amplifier (HPA) is a key part of the transmit chain, but inherently nonlinear. Nonlinearity of the HPA causes intermodulation distortion (IMD). In order to compensate for the IMD, linearization techniques are required. Digital predistortion is one such technique. In this paper, we present an overview of the digital predistortion linearizer that we developed and the experimental results of applying this linearizer to an HPA for IS-95. The experimental results show that the developed linearizer effectively suppresses the IMD by 7 to 10 dB depending on the signal bandwidth.

About this research paper

What this paper is about

The high power amplifier (HPA) is a key part of the transmit chain, but inherently nonlinear. Nonlinearity of the HPA causes intermodulation distortion (IMD). In order to compensate for the IMD, linearization techniques are required. Digital predistortion is one such technique. In this paper, we present an overview of the digital predistortion linearizer that we developed and the experimental results of applying this linearizer to an HPA for IS-95. The experimental results show that the developed linearizer effectively suppresses the IMD by 7 to 10 dB depending on the signal bandwidth.

Why it matters

OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

The high power amplifier (HPA) is a key part of the transmit chain, but inherently nonlinear. Nonlinearity of the HPA causes intermodulation distortion (IMD). In order to compensate for the IMD, linearization techniques are required. Digital predistortion is one such technique. In this paper, we present an overview of the digital predistortion linearizer that we developed and the experimental results of applying this linearizer to an HPA for IS-95. The experimental results show that the developed linearizer effectively suppresses the IMD by 7 to 10 dB depending on the signal bandwidth.

Key concepts: Linearizer, Predistortion, Intermodulation, Nonlinear distortion, Amplifier, Linearization, Electronic engineering, Bandwidth (computing)

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
An application of a digital predistortion linearizer to CDMA HPA's — Research Paper | ScholarLens