TY - GEN
T1 - Poster
T2 - 2026 IEEE Conference on Computer Communications, INFOCOM 2026
AU - Rui, Qiufeng
AU - Chen, Haoze
AU - Ghasempour, Yasaman
N1 - Publisher Copyright: © 2026 IEEE.
PY - 2026
Y1 - 2026
N2 - Communication systems operating in the sub-terahertz regime are strong candidates for next-generation wireless networks due to the abundance of available bandwidth and the potential for extremely high data rates. To overcome the severe path loss at these frequencies, large-scale antenna arrays are required, which in turn extend the near-field region to several tens of meters. In narrowband operation, near-field beam focusing maximizes the received power by concentrating energy at the receiver location. However, in wideband systems, beam focusing induces a frequency-dependent shift of the focal point, resulting in spectral power misalignment and reduced achievable capacity. This poster presents a wavefront-shaping technique that deliberately offsets the focal point from the receiver to redistribute power more uniformly across frequencies, thereby improving wideband channel capacity. Simulation results and over-the-air experiments validate the proposed approach, demonstrating up to a 50.0% capacity improvement over conventional focused beams.
AB - Communication systems operating in the sub-terahertz regime are strong candidates for next-generation wireless networks due to the abundance of available bandwidth and the potential for extremely high data rates. To overcome the severe path loss at these frequencies, large-scale antenna arrays are required, which in turn extend the near-field region to several tens of meters. In narrowband operation, near-field beam focusing maximizes the received power by concentrating energy at the receiver location. However, in wideband systems, beam focusing induces a frequency-dependent shift of the focal point, resulting in spectral power misalignment and reduced achievable capacity. This poster presents a wavefront-shaping technique that deliberately offsets the focal point from the receiver to redistribute power more uniformly across frequencies, thereby improving wideband channel capacity. Simulation results and over-the-air experiments validate the proposed approach, demonstrating up to a 50.0% capacity improvement over conventional focused beams.
UR - https://www.scopus.com/pages/publications/105044497131
UR - https://www.scopus.com/pages/publications/105044497131#tab=citedBy
U2 - 10.1109/INFOCOM59046.2026.11571267
DO - 10.1109/INFOCOM59046.2026.11571267
M3 - Conference contribution
T3 - Proceedings - IEEE INFOCOM
BT - INFOCOM 2026 - IEEE Conference on Computer Communications
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 18 May 2026 through 21 May 2026
ER -