MIMO Wireless Networks: A Promising Rate Splitting Transceiver Architecture
Lead Research Organisation:
University of Edinburgh
Department Name: Sch of Engineering
Abstract
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Organisations
Publications
Basnayaka D
(2019)
Doppler Effect Assisted Wireless Communication for Interference Mitigation
in IEEE Transactions on Communications
Biswas S
(2019)
An Analysis on Caching Placement for Millimeter-Micro-Wave Hybrid Networks
in IEEE Transactions on Communications
Biswas S
(2018)
Coexistence of MIMO Radar and FD MIMO Cellular Systems With QoS Considerations
in IEEE Transactions on Wireless Communications
Papazafeiropoulos A
(2019)
Nuts and Bolts of a Realistic Stochastic Geometric Analysis of mmWave HetNets: Hardware Impairments and Channel Aging
in IEEE Transactions on Vehicular Technology
Papazafeiropoulos A
(2018)
Rate-Splitting Robustness in Multi-Pair Massive MIMO Relay Systems
in IEEE Transactions on Wireless Communications
Papazafeiropoulos A
(2017)
Toward a Realistic Assessment of Multiple Antenna HCNs: Residual Additive Transceiver Hardware Impairments and Channel Aging
in IEEE Transactions on Vehicular Technology
Papazafeiropoulos A
(2017)
Rate-Splitting to Mitigate Residual Transceiver Hardware Impairments in Massive MIMO Systems
in IEEE Transactions on Vehicular Technology
Papazafeiropoulos A
(2018)
Modeling and Performance of Uplink Cache-Enabled Massive MIMO Heterogeneous Networks
in IEEE Transactions on Wireless Communications
Singh K
(2018)
Toward Optimal Power Control and Transfer for Energy Harvesting Amplify-and-Forward Relay Networks
in IEEE Transactions on Wireless Communications
Singh K
(2018)
Transceiver Design and Power Allocation for Full-Duplex MIMO Communication Systems With Spectrum Sharing Radar
in IEEE Transactions on Cognitive Communications and Networking
| Description | In this work, we focus on a realistic massive multiple-input single-output broadcast channel hampered by the inevitable hardware impairments. We consider a general experimentally validated model of hardware impairments, accounting for the presence of multiplicative distortion due to phase noise, additive distortion noise and thermal noise amplification. Under both scenarios with perfect and imperfect channel state information at the transmitter (CSIT), we analyze the potential robustness of RS to each separate hardware imperfection. We analytically assess the sum-rate degradation due to hardware imperfections. Interestingly, in the case of imperfect CSIT, we demonstrate that RS is a robust strategy for multiuser MIMO in the presence of phase and amplified thermal noise, since its sum-rate does not saturate at high signal-to-noise ratio (SNR), contrary to conventional techniques. On the other hand, the additive impairments always lead to a sum-rate saturation at high SNR, even after the application of RS. However, RS still enhances the performance. Furthermore, as the number of users increases, the gains provided by RS decrease not only in ideal conditions, but in practical conditions with residual transceiver hardware impairments as well. Notably, although a deterministic equivalent analysis is employed, the analytical and simulation results coincide even for finite system dimensions. As a consequence, the applicability of these results also holds for current "small scale" multiantenna systems. |
| Exploitation Route | Our finding may influence the future wireless standard and products. We are currently working with local industry Calnex and international telecom industry Huawei and exploiting our research knowledge. Also including the research finding in our teaching syllabus (Advanced wireless communications and Array Signal Processing and MIMO). |
| Sectors | Digital/Communication/Information Technologies (including Software),Education |
| URL | http://www.profratnarajah.org/ |
| Description | We are currently working with local industry Calnex and international telecom industry Huawei and exploiting our research knowledge. Also including the research finding in our teaching syllabus (Advanced wireless communications and Array Signal Processing). Obtained industry funding from Huawei - £230K. |
| First Year Of Impact | 2019 |
| Sector | Digital/Communication/Information Technologies (including Software),Education |
| Description | Organising a one day workshop at the IEEE 81st Vehicular Technology Conference: VTC2015-Spring, Glasgow, Scotland, 11-14 May 2015 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Postgraduate students |
| Results and Impact | Organising a one day workshop at the IEEE 81st Vehicular Technology Conference: VTC2015-Spring, Glasgow, Scotland, 11-14 May 2015. The workshop title is "International Workshop on Emerging MIMO Technologies in 5G Wireless Cellular Networks" |
| Year(s) Of Engagement Activity | 2015 |