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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Joint Coherent/Non-Coherent Detection for Distributed Massive MIMO: Enabling Cooperation Under Mixed Channel State
Supuni Gunasekara1, Peter Smith2, Margreta Kuijper1
1Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, VIC 3010, Australia.
Sensors (Basel, Switzerland)
|November 13, 2025
Summary
New detectors enable base stations (BSs) with varying channel state information (CSI) to cooperate in Beyond-5G networks. These novel approaches improve performance without requiring full CSI at all cooperating BSs.
Area of Science:
- Wireless communication systems
- Signal processing
- Information theory
Background:
- Beyond-5G networks utilize distributed massive MIMO for enhanced performance.
- Cooperating base stations (BSs) face challenges with differing channel state information (CSI) availability due to constraints.
Purpose of the Study:
- To propose novel signal detection methods for Beyond-5G networks with heterogeneous CSI.
- To enable cooperation between BSs possessing different levels of CSI.
Main Methods:
- Development of coherent/non-coherent (CNC) and differential CNC detectors.
- Formulation based on the maximum likelihood (ML) criterion.
- Derivation of analytical expressions for pairwise block error probabilities.
Main Results:
- The proposed CNC detectors outperform single-BS baseline detectors.
- Demonstrated resilience to mid-to-high range antenna correlation.
- Achieved improved performance without requiring full CSI at all BSs.
Conclusions:
- The CNC detectors effectively integrate coherent and non-coherent approaches for improved signal detection.
- The proposed framework enhances cooperation in distributed massive MIMO systems with limited CSI.
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