Self-Interference Mitigation using 1-Bit Bandpass Delta-Sigma Modulator with No Output Section

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In wireless communication systems, multi-input and multi-output (MIMO) and carrier aggregation (CA) have been developed to achieve high speed and high capacity communication. In these methods, many transmitters and receivers are used, which leads to larger equipment, and miniaturization is an issue. In this paper, a 1-bit bandpass delta-sigma modulator (BP-DSM) for the transmitter and a direct RF undersampling sample/hold integrated circuit (S/H-IC) for the receiver are introduced. In addition, to mitigate the self-interference between transmitters and receivers caused by miniaturization, the output waveform of the transmitted signal is pulsed like Return to Zero (RZ) and a no output section (NOS) of the transmitted signal is periodically introduced to be separated the received signal in the time domain. In a demonstration experiment, a reception performance of 9.87% error vector magnitude (EVM) in the NOS has been achieved at 760 MHz for both the transmission frequency and reception frequency, 64 QAM and 16 QAM for the transmission and reception signal, respectively, and a DU ratio of 0 dB.

Original languageEnglish
Title of host publication2020 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages97-99
Number of pages3
ISBN (Electronic)9781728165066
DOIs
Publication statusPublished - 2020 Sep
Event2020 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2020 - Hiroshima, Japan
Duration: 2020 Sep 22020 Sep 4

Publication series

Name2020 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2020

Conference

Conference2020 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2020
CountryJapan
CityHiroshima
Period20/9/220/9/4

Keywords

  • bandpass
  • D/A converter
  • delta-sigma modulator
  • direct sampling
  • Interference
  • S/H

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Radiation

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