Digital self-healing using smart sensing technique for IQ mismatch and lo leakage against non-flat path response in mmwave communication system

Ngoc Giang Doan, Hung Chih Liu, Chih-Wei Jen, Shyh-Jye Jou*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In this paper, we propose a self-healing technique with the smart sensing capability to exactly estimate and pre-compensate both the imperfect effects of IQ mismatch and LO leakage of the up-conversion mixer under the non-flat path impulse response (PIR) for improving TX EVM in 60 GHz broadband wireless communication systems. The proposed method may use the direct digital frequency synthesis (DDFS) module to send the test signals including a single-tone (ST) and a two-tone (TT) modes for sensing PIR and estimating the imperfect effects of the up-conversion mixer, respectively. The 8-bit fixed-point simulation result shows the proposed technique can achieve very excellent results.

Original languageAmerican English
Title of host publication2020 IEEE International Symposium on Circuits and Systems, ISCAS 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728133201
DOIs
StatePublished - Oct 2020
Event52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020 - Virtual, Online
Duration: 10 Oct 202021 Oct 2020

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2020-October
ISSN (Print)0271-4310

Conference

Conference52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020
CityVirtual, Online
Period10/10/2021/10/20

Keywords

  • IQ mismatch
  • LO leakage
  • Pre-compensation

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