| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Pontifical Catholic Univ Rio de Janeiro, Ctr Telecommun Studies, BR-22453900 Rio De Janeiro - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | IEEE TRANSACTIONS ON COMMUNICATIONS; v. 69, n. 5, p. 3423-3435, MAY 2021. |
| Web of Science Citations: | 8 |
| Abstract | |
In this work, large-scale multiple-antenna systems are investigated, where the base station employs a large antenna array with low-cost and low-power 1-bit analog-todigital converters. To compensate for the performance loss caused by the coarse quantization, oversampling is applied at the receiver. Unlike existing works that use uniform oversampling, which samples the signal at a constant rate, a novel dynamic oversampling scheme is proposed. The basic idea is to perform time-varying nonuniform oversampling, which selects samples with nonuniform patterns that vary over time. We consider two system design criteria: a design that maximizes the achievable sum rate and another design that minimizes the mean square error of detected symbols. Dynamic oversampling is carried out using a dimension reduction matrix Delta, which can he computed by the generalized eigenvalue decomposition or by novel submatrix-level feature selection algorithms. Moreover, the proposed scheme is analyzed in terms of convergence, computational complexity and power consumption at the receiver. Simulations show that systems with the proposed dynamic oversampling outperform those with uniform oversampling in terms of computational cost, achievable sum rate and symbol error rate performance. (AU) | |
| FAPESP's process: | 18/12579-7 - ELIOT: enabling technologies for IoT |
| Grantee: | Vitor Heloiz Nascimento |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/24499-0 - Cloud radio access networks for 5th generation wireless communications: new concepts, algorithms and applications |
| Grantee: | Rodrigo Caiado de Lamare |
| Support Opportunities: | Research Projects - Thematic Grants |