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Low Complexity Precoder with Exploration for 1-bit MU-MISO: QAM constellations
- Issue Date
- Sep-2024
- Keywords
- 1-bit DAC; downlink precoding; massive MISO; mixed integer linear programming
- Citation
- IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, pp 891 - 895
- Pages
- 5
- Indexed
- SCOPUS
- Journal Title
- IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
- Start Page
- 891
- End Page
- 895
- ISSN
- 2325-3789
1948-3252
- Abstract
- We study the construction of a transmit signal for downlink multi-user multiple-input single-output (MU-MISO) systems with cost-effective 1-bit digital-to-analog converters (DACs). In our earlier work, this challenging problem was formulated as a mixed integer linear programming (MILP) and solved through conventional LP relaxation. In this paper, we present a two-step iterative algorithm with an elegant performance-complexity tradeoff. The proposed algorithm can approach the performance of the LP-based method while reducing the computational complexity by 1/ log(Nt), where Nt is the number of transmit antennas. Via simulations, we demonstrate the effectiveness of the proposed algorithm.
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Related Researcher
- Hong, Song nam
- COLLEGE OF ENGINEERING (SCHOOL OF ELECTRONIC ENGINEERING)