Methods for mitigating inter-carrier interference caused by power amplifier transient in LTE modem

Hyukjin Chae; Ilnam Cho; Dong Ku Kim

doi:10.1587/elex.12.20141177

Methods for mitigating inter-carrier interference caused by power amplifier transient in LTE modem

Hyukjin Chae, Ilnam Cho, Dong Ku Kim

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Power amplifier transient of LTE modem is discussed. In current LTE specification, the requirement of power amplifier transient period for LTE modem is within 40 µs. Under this requirement, non-negligible inter-carrier interference (ICI) can be observed for both of normal cyclic prefix (CP) (= 4.7 µs) and extended CP (= 16.7 µs). We analyze the ICI in terms of the transient response of power amplifier and propose ICI mitigation schemes: 1) digital pre-distortion at transmitter 2) low complexity multi-tap equalization at receiver based on the ICI analysis.

Original language	English
Article number	20141177
Journal	ieice electronics express
Volume	12
Issue number	4
DOIs	https://doi.org/10.1587/elex.12.20141177
Publication status	Published - 2015 Jan 30

Bibliographical note

Publisher Copyright:
© IEICE 2015.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1587/elex.12.20141177

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abstract = "Power amplifier transient of LTE modem is discussed. In current LTE specification, the requirement of power amplifier transient period for LTE modem is within 40 µs. Under this requirement, non-negligible inter-carrier interference (ICI) can be observed for both of normal cyclic prefix (CP) (= 4.7 µs) and extended CP (= 16.7 µs). We analyze the ICI in terms of the transient response of power amplifier and propose ICI mitigation schemes: 1) digital pre-distortion at transmitter 2) low complexity multi-tap equalization at receiver based on the ICI analysis.",

author = "Hyukjin Chae and Ilnam Cho and Kim, {Dong Ku}",

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Methods for mitigating inter-carrier interference caused by power amplifier transient in LTE modem

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