6 papers
Rainbow Beamforming for Wideband LEO Satellite Communications: Principles, Applications, and Technical Challenges
Juha Park, Hyungseok Ko, Haejung Kim +4
Low Earth Orbit (LEO) satellite communications (SATCOM) has emerged as a key enabler of global connectivity for 6G networks. To overcome the significant path loss of space-to-groun…
Beyond Beam Sweeping: One-Shot Satellite Acquisition with Doppler-Aware Rainbow Beamforming
Juha Park, Ian P. Roberts, Wonjae Shin
High-gain beamforming (BF) is essential for low Earth orbit (LEO) satellite communications to overcome severe path loss, but this requires acquiring precise satellite positions. Co…
Embracing Beam-Squint Effects for Wideband LEO Satellite Communications: A 3D Rainbow Beamforming Approach
Juha Park, Seokho Kim, Wonjae Shin +1
Low Earth Orbit (LEO) satellite communications (SATCOM) offers high-throughput, low-latency global connectivity to a very large number of users. To accommodate this demand with lim…
Rate-Matching Framework for RSMA-Enabled Multibeam LEO Satellite Communications
Jaehyup Seong, Juha Park, Juhwan Lee +4
With the goal of ubiquitous global connectivity, multibeam low Earth orbit (LEO) satellite communication (SATCOM) has attracted significant attention in recent years. The traffic d…
Rate-Splitting for Joint Unicast and Multicast Transmission in LEO Satellite Networks with Non-Uniform Traffic Demand
Jaehyup Seong, Juha Park, Dong-Hyun Jung +2
Low Earth orbit (LEO) satellite communications (SATCOM) with ubiquitous global connectivity is deemed a pivotal catalyst in advancing wireless communication systems for 5G and beyo…
A Bistatic ISAC Framework for LEO Satellite Systems: A Rate-Splitting Approach
Juha Park, Jaehyup Seong, Jaehak Ryu +2
Aiming to achieve ubiquitous global connectivity and target detection on the same platform with improved spectral/energy efficiency and reduced onboard hardware cost, low Earth orb…