Gyre Precoding for MU-MIMO Systems
| Autor: | J. C. De Luna Ducoing, Konstantinos Nikitopoulos, Yun Xue, Yiping Qin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
geography
geography.geographical_feature_category Computer science business.industry Multi-user MIMO Precoding Computer Science Applications Ocean gyre Modeling and Simulation Wireless Electrical and Electronic Engineering Gradient descent business Throughput (business) Algorithm Rotation (mathematics) 5G |
| Zdroj: | IEEE Communications Letters. 25:2723-2727 |
| ISSN: | 2373-7891 1089-7798 |
| Popis: | This work introduces Gyre Precoding (GP), a novel linear multi-user multiple-input multiple-output (MU-MIMO) precoding approach. GP performs rotations of the symbols of each spatial layer to optimize the precoding performance. To find the rotation angles, we propose a near-optimal, gradient descent–based low-complexity algorithm. GP is constellation-agnostic and does not require significant changes to conventional receiver procedures or wireless standards. Computer evaluation results show that GP can achieve 8 dB SNR gains over linear precoding techniques and 2 dB over suboptimal symbol-level precoding (SLP) methods for a $16\times16$ MU-MIMO system. Furthermore, in a $64\times12$ massive-MIMO scenario in a 5G New Radio (5GNR) setup, GP achieves a 13% higher throughput gain over zero-forcing precoding. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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