Reconfigurable Signal Processing and DSP Hardware Generator for 5G Transmitters

Agnimesh Ghosh, Andrei Spelman, Tze Hin Cheung, Dhanashree Boopathy, Vishnu Unnikrishnan, Vesa Lampu, Guixian Xu, Lauri Anttila, Kari Stadius, Marko Kosunen, Jussi Ryynänen

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

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Abstract

To impose the reconfigurability and reusability of digital circuits for millimeterwave transmitter architectures, high-speed digital signal processing architectures are explored. The digital front-end of these next-generation transmitters can be implemented up to the maximum operating frequency to meet the requirements of the 5G NR FR2 frequency bands. This paper presents an efficient implementation of a reconfigurable digital signal processor (DSP) that contains programmable multistage multirate filters, operable up to 4 GHz, and a flexible generator for polar, outphasing, and multilevel outphasing modulation. The system achieves an excellent ACLR of 42 dB and EVM degradation of 1.61% with a 7-bit phase signal at a sampling frequency of 4 GHz for outphasing modulation. Digital synthesis of the circuit in a 22 nm FDSOI process results in a core area of 0.12 mm2and an estimated power consumption of 142 mW for a 200 MHz bandwidth 5G NR baseband signal.
Original languageEnglish
Title of host publication2022 IEEE Nordic Circuits and Systems Conference, NORCAS 2022 - Proceedings
EditorsJari Nurmi, Dag T. Wisland, Snorre Aunet, Kristian Kjelgaard
PublisherIEEE
Pages1-7
Number of pages7
ISBN (Electronic)979-8-3503-4550-6
ISBN (Print)979-8-3503-4551-3
DOIs
Publication statusPublished - 26 Oct 2022
MoE publication typeA4 Article in a conference publication
EventIEEE Nordic Circuits and Systems Conference - Oslo, Norway
Duration: 25 Oct 202226 Oct 2022

Conference

ConferenceIEEE Nordic Circuits and Systems Conference
Abbreviated titleNorCAS
Country/TerritoryNorway
CityOslo
Period25/10/202226/10/2022

Keywords

  • digital signal processing (DSP)
  • 5G
  • Reconfigurable hardware
  • Digital Front-end
  • System on Chip
  • Outphasing
  • Transmitter

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