Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

On Time-Interleaving Errors in Beamforming Receivers

Asli, Javad Bagheri ; Gannedahl, Rikard LU ; Sjoland, Henrik LU orcid and Alvandpour, Atila (2025) 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025
Abstract

Time-interleaved ADCs are a key building block in mm-wave receivers, where the use of multi-GHz signal bandwidths requires high-performance wide-band data conversion. It is therefore necessary to explore the beamforming receiver system impact of different time-interleaved ADC parameters and limitations, such as number of interleaved channels, mismatches between channels, non-idealities of the subADCs, and correlation between sub-ADCs. This paper presents a scalable testbench in MATLAB/Simulink which models time-interleaved pipeline ADCs with high fidelity. The testbench is used to investigate the impact of time-interleaving errors on digital, hybrid, and analog beamforming receivers, both with and without interfering signals. Results... (More)

Time-interleaved ADCs are a key building block in mm-wave receivers, where the use of multi-GHz signal bandwidths requires high-performance wide-band data conversion. It is therefore necessary to explore the beamforming receiver system impact of different time-interleaved ADC parameters and limitations, such as number of interleaved channels, mismatches between channels, non-idealities of the subADCs, and correlation between sub-ADCs. This paper presents a scalable testbench in MATLAB/Simulink which models time-interleaved pipeline ADCs with high fidelity. The testbench is used to investigate the impact of time-interleaving errors on digital, hybrid, and analog beamforming receivers, both with and without interfering signals. Results show that the combination of time-interleaving errors and interference causes a degradation in beamforming performance, even at relatively low SNDR levels. The effect is more pronounced in digital beamforming compared to hybrid and analog beamforming.

(Less)
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
6G, ADC, beamforming, phased array, pipeline, receiver, system-level test-bench, time-interleaving
host publication
2025 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025
conference location
Taormina, Italy
conference dates
2025-09-21 - 2025-09-24
external identifiers
  • scopus:105021610159
ISBN
9798331503901
DOI
10.1109/PRIME66228.2025.11203668
language
English
LU publication?
yes
id
718cb011-9175-42f8-94a3-bc6d55cbc1b7
date added to LUP
2026-02-10 15:27:45
date last changed
2026-02-10 15:28:00
@inproceedings{718cb011-9175-42f8-94a3-bc6d55cbc1b7,
  abstract     = {{<p>Time-interleaved ADCs are a key building block in mm-wave receivers, where the use of multi-GHz signal bandwidths requires high-performance wide-band data conversion. It is therefore necessary to explore the beamforming receiver system impact of different time-interleaved ADC parameters and limitations, such as number of interleaved channels, mismatches between channels, non-idealities of the subADCs, and correlation between sub-ADCs. This paper presents a scalable testbench in MATLAB/Simulink which models time-interleaved pipeline ADCs with high fidelity. The testbench is used to investigate the impact of time-interleaving errors on digital, hybrid, and analog beamforming receivers, both with and without interfering signals. Results show that the combination of time-interleaving errors and interference causes a degradation in beamforming performance, even at relatively low SNDR levels. The effect is more pronounced in digital beamforming compared to hybrid and analog beamforming.</p>}},
  author       = {{Asli, Javad Bagheri and Gannedahl, Rikard and Sjoland, Henrik and Alvandpour, Atila}},
  booktitle    = {{2025 20th International Conference on PhD Research in Microelectronics and Electronics, PRIME 2025}},
  isbn         = {{9798331503901}},
  keywords     = {{6G; ADC; beamforming; phased array; pipeline; receiver; system-level test-bench; time-interleaving}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  title        = {{On Time-Interleaving Errors in Beamforming Receivers}},
  url          = {{http://dx.doi.org/10.1109/PRIME66228.2025.11203668}},
  doi          = {{10.1109/PRIME66228.2025.11203668}},
  year         = {{2025}},
}