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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/8585
Title: Reconfigurable Digital Delta-Sigma Modulation Transmitter Architecture for Concurrent Multi-Band Transmission
Authors: Kumar N.
Rawat, Karun
Ghannouchi F.M.
Published in: IEEE Transactions on Circuits and Systems I: Regular Papers
Abstract: This paper presents a reconfigurable delta-sigma modulation (DSM) architecture for concurrent multi-band transmission. The reconfigurability in terms of carrier spacing and the number of simultaneous carrier transmission is useful for applications such as carrier aggregation in 5G. This paper uses $4^{th}$ order reconfigurable multi-band DSM (RMB-DSM) such that the zeros of the noise transfer function can be reconfigured to fall at multiple frequencies, where the carriers are being aggregated. The quantization noise between the transmission bands is a critical issue in the case of multi-band transmission. Therefore, a multi-band additional noise shaping (ANS) function is also introduced, which generates notches around each carrier and reduces the noise level between the multiple pass-bands. The proposed scheme has been validated in simulation, as well as in experiment for aggregating up to four 15 MHz long term evolution (LTE) signals with an overall aggregated bandwidth of 60 MHz. Measurement results show a 10-25% improvement in coding efficiency and 15-35 dB improvement in noise level near the operating frequency band using the proposed multi-band augmented noise shaping technique, as compared to the standard DSM. The corresponding improvement of 8% in the overall efficiency is observed by using the proposed multi-band augmented noise shaping technique. © 2004-2012 IEEE.
Citation: IEEE Transactions on Circuits and Systems I: Regular Papers (2020), 67(7): 2455-2466
URI: https://doi.org/10.1109/TCSI.2020.2973573
http://repository.iitr.ac.in/handle/123456789/8585
Issue Date: 2020
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: 5G
Band pass DSM (BP-DSM)
carrier aggregation
delta-sigma modulation (DSM)
multi-band transmission
noise shaping
power amplifier (PA)
ISSN: 15498328
Author Scopus IDs: 57199419144
57000644800
7006217592
Author Affiliations: Kumar, N., Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, 247667, India
Rawat, K., Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, 247667, India
Ghannouchi, F.M., Department of Electrical and Computer Engineering, IRadio Laboratory, Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Funding Details: Manuscript received November 14, 2019; revised January 24, 2020; accepted February 9, 2020. Date of publication February 21, 2020; date of current version July 1, 2020. This work was mainly supported by SERB Grant CRG/2018/003869, in part by SPARC Grant SPARC/2018-2019/P291/SL, and in part by the UGC/CSIR Ph.D. Fellowship, Government of India. This article was recommended by Associate Editor L. Hernandez. (Corresponding author: Karun Rawat.) Nishant Kumar and Karun Rawat are with the Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee 247667, India (e-mail: nishantseth07@gmail.com; karun.rawat.in@ieee.org).
Corresponding Author: Rawat, K.; Department of Electronics and Communication Engineering, IIT RoorkeeIndia; email: karun.rawat.in@ieee.org
Appears in Collections:Journal Publications [ECE]

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