About Ahmed Hussain Ahmed Hussain Ph.D. Student, Electrical and Computer Engineering Digital signal processing Next generation wireless communications massive MIMO wireless communication Near field communications ISAC machine learning for wireless communication Projects Related Projects 2026 Uniform Circular Arrays in Near-Field: Omnidirectional Coverage With Limited Capacity Wed, Aug 5 2026 Research wireless communication • Background: Ultra-massive MIMO in the radiative near-field uses spherical wavefronts to create finite-depth beams, separating users by distance and angle. Uniform Linear Arrays (ULAs) restrict finite-depth beams primarily to the boresight. Uniform Circular Arrays (UCAs) offer rotational symmetry, expanding angular coverage. Does the omnidirectional coverage of a UCA inherently translate into improved spatial multiplexing and sum-rate capacity compared to a ULA? • Methodology : Traditional Rayleigh distance overestimates the near-field region. We utilize the Effective Beamfocusing Rayleigh 2025 Polar Codebook Design for Near-Field Communication Thu, Sep 25 2025 Research wireless communication As sixth-generation (6G) wireless networks approach, leveraging the mmWave and THz bands' abundant spectrum becomes crucial, promising ultra-high data rates and enabling immersive communication experiences. This transformation, characterized by the integration of ultra-massive MIMO (UM-MIMO) systems, facilitates significant increases in throughput and capacity by utilizing densely packed antenna arrays. The resulting shift from traditional far-field communication, with its planar wavefronts, to near-field communication, where spherical wavefronts predominate, necessitates a reevaluation of
Uniform Circular Arrays in Near-Field: Omnidirectional Coverage With Limited Capacity Wed, Aug 5 2026 Research wireless communication • Background: Ultra-massive MIMO in the radiative near-field uses spherical wavefronts to create finite-depth beams, separating users by distance and angle. Uniform Linear Arrays (ULAs) restrict finite-depth beams primarily to the boresight. Uniform Circular Arrays (UCAs) offer rotational symmetry, expanding angular coverage. Does the omnidirectional coverage of a UCA inherently translate into improved spatial multiplexing and sum-rate capacity compared to a ULA? • Methodology : Traditional Rayleigh distance overestimates the near-field region. We utilize the Effective Beamfocusing Rayleigh
Polar Codebook Design for Near-Field Communication Thu, Sep 25 2025 Research wireless communication As sixth-generation (6G) wireless networks approach, leveraging the mmWave and THz bands' abundant spectrum becomes crucial, promising ultra-high data rates and enabling immersive communication experiences. This transformation, characterized by the integration of ultra-massive MIMO (UM-MIMO) systems, facilitates significant increases in throughput and capacity by utilizing densely packed antenna arrays. The resulting shift from traditional far-field communication, with its planar wavefronts, to near-field communication, where spherical wavefronts predominate, necessitates a reevaluation of
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