Independent trial finds strong uplink gains for FDD massive MU-MIMO on Verizon network
A recent independent trial examined 5G massive MIMO and multi-user MIMO using FDD spectrum on Verizon's live network in St. Paul, Minnesota, where Ericsson supplied the equipment. The results showed that 32T32R massive MIMO delivered performance gains, and MU-MIMO further improved uplink throughput, while downlink benefits were less consistent. FDD is viewed as harder for these MIMO techniques than TDD, and commercial deployments of FDD massive MIMO remain uncommon.
Signals Research Group says it ran what may be the first independent live-network trial of 5G massive MIMO and MU-MIMO in FDD spectrum. The work covered several Verizon cells in St. Paul, Minnesota, with Ericsson as vendor. A 32T32R deployment produced gains, and adding MU-MIMO raised uplink throughput further; downlink results were less uniform.
FDD is considered tougher for these techniques than TDD because uplink and downlink use separate frequencies, complicating channel knowledge. Commercial FDD massive MIMO remains rare, with few operators and modest site counts outside China. Testing used Motorola razr fold 2026 phones on 5G Standalone Band n2, plus Accuver and Keysight tools, in stationary and walking scenarios.
If FDD massive MU-MIMO proves reliable, mobile users in spectrum-constrained areas may see better uplink capacity for video calls, uploads, and connected devices. Operators could gain more capacity without new spectrum, potentially affecting service quality and deployment economics. Benefits may depend on vendor support, device compatibility, and real-world consistency, especially given weaker downlink results.