10 papers
Robust Near-Field Beam Focusing Under Imperfect Localization
Nima Mozaffarikhosravi, Amirhossein Azarbahram, Prathapasinghe Dharmawansa +1
The transition to 6G-and-beyond wireless systems with large-scale antenna arrays and high-frequency deployments significantly extends the near-field region, where channels exhibit…
Standard Condition Number-Based Robust Signal Detection with Whitening under Uncertainty
Tharindu Udupitiya, Saman Atapattu, Prathapasinghe Dharmawansa +2
Robust signal detection in colored noise with unknown covariance is essential in radar, cognitive radio, integrated sensing and communication (ISAC), and quantum sensing applicatio…
The Effect of Noise Correlation on MMSE Channel Estimation in One-Bit Quantized Systems
Minhua Ding, Prathapasinghe Dharmawansa, Italo Atzeni +1
This paper analyzes the impact of spatially correlated additive noise on the minimum mean-square error (MMSE) estimation of multiple-input multiple-output (MIMO) channels from one-…
LoS+NLoS Holographic MIMO: Analysis and Application of Wavenumber-Division Multiplexing
Ashutosh Prajapati, Prathapasinghe Dharmawansa, Marco Di Renzo +1
Holographic multiple-input multiple-output (MIMO) enables electrically large continuous apertures, overcoming the physical scaling limits of conventional MIMO architectures with ha…
Localization-Based Beam Focusing in Near-Field Communications
Nima Mozaffarikhosravi, Prathapasinghe Dharmawansa, Italo Atzeni
Shifting 6G-and-beyond wireless systems to higher frequency bands and the utilization of massive multiple-input multiple-output arrays will extend the near-field region, affecting…
Wavenumber-Division Multiplexing in Holographic MIMO with NLoS Channels
Ashutosh Prajapati, Prathapasinghe Dharmawansa, Marco Di Renzo +1
Wavenumber-division multiplexing (WDM) was introduced as a counterpart of orthogonal frequency-division multiplexing in the spatial-frequency domain for line-of-sight holographic m…