A low computing I/Q-mismatch compensator for 3GPP LTE systems

Terng-Yin Hsu*, Wei Chi Lai, Shao Ying Yeh

*Corresponding author for this work

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

1 Scopus citations

Abstract

Variations of I/Q gains and phases of RF frontend, namely I/Q mismatch (I/Q-M), are the important impact in OFDM-based wireless accesses. Making a 2x2 MIMO-OFDM modem of 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) work properly, this work investigates a low computing cross-ratio engine to deal with serious I/Q-M by using only synchronization signal (SS). Through performance evaluation, our approach incurs a 0.3-dB SNR loss to maintain BER<10 -5 at 1-dB gain error and 15°-phase error. Hence, this work not only ensures adequate performances, but also makes low computing I/Q-M estimation and compensation.

Original languageEnglish
Title of host publicationCSQRWC 2012 - 2012 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference
Pages118-122
Number of pages5
DOIs
StatePublished - 30 Oct 2012
Event2012 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2012 - New Taipei City, Banqiao Dist., Taiwan
Duration: 23 Jul 201227 Jul 2012

Publication series

NameCSQRWC 2012 - 2012 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference

Conference

Conference2012 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2012
CountryTaiwan
CityNew Taipei City, Banqiao Dist.
Period23/07/1227/07/12

Keywords

  • Cross-Ratio Engine
  • I/Q Mismatch (I/Q-M)
  • Long Term Evolution (LTE)
  • Synchronization Signal (SS)

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