Nitish Vikas Deshpande

College of Engineering

Works (4)

Updated: June 8th, 2023 05:00

2023 journal article

A Wideband Generalization of the Near-Field Region for Extremely Large Phased-Arrays

IEEE WIRELESS COMMUNICATIONS LETTERS, 12(3), 515–519.

By: N. Deshpande n, M. Castellanos  n, S. Khosravirad *, J. Du *, H. Viswanathan * & R. Heath Jr

author keywords: Near-field; wideband; phased-array; frequency-selective; beamforming gain
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: April 24, 2023

2022 article

Nonuniform true time delay precoding in wideband MISO systems

2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 1233–1237.

By: N. Deshpande n, M. Castellanos  n & R. Heath n 

author keywords: true time delay beamforming; wideband; multi-path; sparse eigenvalue problem; minorization-maximization
TL;DR: This work reformulates the TTD constraint by including a sparsity regularizer penalty term in the objective and proposes a procedure to compute the delays using the precoder response obtained after solving a sparse eigenvalue problem for maximizing the total energy. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023

2022 journal article

Spatially-Correlated IRS-Aided Multiuser FD mMIMO Systems: Analysis and Optimization

IEEE TRANSACTIONS ON COMMUNICATIONS, 70(6), 3879–3896.

By: N. Deshpande n, S. Dey  n, D. Amudala  n & R. Budhiraja  n

author keywords: Optimization; MIMO communication; Correlation; Downlink; Energy efficiency; Wireless communication; Transforms; Closed-form power optimization; global energy efficiency (GEE); intelligent reflecting surface (IRS); spatial correlation; quadratic transform (QT)
TL;DR: It is numerically show that increasing the number of IRS elements can help a FD mMIMO BS outperform its half-duplex counterpart, which otherwise under-performs due to its limited ability to cancel various FD interferences. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: June 27, 2022

2021 article

Analysis of Statistical CSI-based Optimized Phase-Shift IRS-aided FD mMIMO System

2021 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM).

By: N. Deshpande*, S. Dey *, D. Amudala *, E. Sharma * & R. Budhiraja *

TL;DR: A projected gradient ascent based IRS phase optimization algorithm is proposed, which also uses only statistical CSI, and enables the system to achieve a higher SE in the presence of the loop and inter-user interferences. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: May 23, 2022

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