Hardware topologies for decentralized large-scale MIMO detection using Newton method


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Kulkarni, A., Ahmed Ouameur, M. et Massicotte, D. (2021). Hardware topologies for decentralized large-scale MIMO detection using Newton method. IEEE Transactions on Circuits and Systems I: Regular Papers, 68 (9). p. 3732-3745. ISSN 1558-0806 DOI 10.1109/TCSI.2021.3097042

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Centralized Massive Multiple Input Multiple Output (MIMO) uplink detection techniques for baseband processing possess severe bottleneck in terms of interconnect bandwidth and computational complexity. This problem has been addressed in the current work by adapting the centralized Newton method for decentralized MIMO uplink detection leveraging several Base Station antenna clusters. The proposed decentralized Newton (DN) method achieves error-rate performance close to centralized Zero Forcing detector as compared to other decentralized techniques. Two hardware topologies, namely the ring and the star topologies, are proposed to assess and discuss the trade-off among interconnect bandwidth and throughput, in comparison with contemporary decentralized MIMO uplink detection techniques. As such the following findings are elaborated. On BS antenna cluster scaling for different MIMO system configurations, the ring topology provides high throughput at constant interconnect bandwidth, while the star topology provides lower latency with a deterministic variation in the hardware resource consumption. Due to strategic optimizations on the hardware implementation, additional user equipment can be allotted at a fractional increase in Field Programmable Gate Array resource consumption, improved energy efficiency, and increased transaction of bits per Joule. The ring topology can process additional subcarrier at a fractional increase in latency and improved system throughput.

Type de document: Article
Mots-clés libres: MIMO uplink detection Newton method FPGA Decentralized processing Hardware topology Interconnect bandwidth
Date de dépôt: 09 mai 2022 20:19
Dernière modification: 09 mai 2022 20:19
Version du document déposé: Post-print (version corrigée et acceptée)
URI: https://depot-e.uqtr.ca/id/eprint/10122

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