185 citations · 847 across the 129 of their papers we have counts for
6 papers · 1 filter
Massive MIMO Pilot Retransmission Strategies for Robustification against Jamming
Tan Tai Do, Hien Quoc Ngo, Trung Q. Duong +2
This letter proposes anti-jamming strategies based on pilot retransmission for a single user uplink massive MIMO under jamming attack. A jammer is assumed to attack the system both…
Multi-Way Massive MIMO with Maximum-Ratio Processing and Imperfect CSI
Chung Duc Ho, Hien Quoc Ngo, Michail Matthaiou +1
This paper considers a multi-way massive multiple-input multiple-output relaying system, where single-antenna users exchange their information-bearing signals with the help of one…
On the Performance of Cell-Free Massive MIMO with Short-Term Power Constraints
Giovanni Interdonato, Hien Quoc Ngo, Erik G. Larsson +1
In this paper we consider a time-division duplex cell-free massive multiple-input multiple-output (MIMO) system where many distributed access points (APs) simultaneously serve many…
How Much Do Downlink Pilots Improve Cell-Free Massive MIMO?
Giovanni Interdonato, Hien Quoc Ngo, Erik G. Larsson +1
In this paper, we analyze the benefits of including downlink pilots in a cell-free massive MIMO system. We derive an approximate per-user achievable downlink rate for conjugate bea…
No Downlink Pilots are Needed in TDD Massive MIMO
Hien Quoc Ngo, Erik G. Larsson
We consider the Massive Multiple-Input Multiple-Output (MIMO) downlink with maximum-ratio and zero-forcing processing and time-division duplex (TDD) operation. To decode, the termi…
Cell-Free Massive MIMO versus Small Cells
Hien Quoc Ngo, Alexei Ashikhmin, Hong Yang +2
A Cell-Free Massive MIMO (multiple-input multiple-output) system comprises a very large number of distributed access points (APs)which simultaneously serve a much smaller number of…