Precoder Design for Dynamically Sub-connected Hybrid Architecture in MU-MISO-OFDM Systems

Hybrid precoding combined with large-scale antenna arrays is considered as a key enabling technology for millimeter wave (mmWave) communications for its advantages in both reducing the number of power-hungry radio frequency (RF) chains and providing for spatial multiplexing. In this paper, we consid...

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Veröffentlicht in:IEEE Vehicular Technology Conference S. 1 - 5
Hauptverfasser: Li, Hongyu, Liu, Rang, Wang, Zihuan, Li, Ming, Liu, Qian
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 01.11.2020
Schlagworte:
Adaptive arrays
dynamically sub-connected hybrid architecture
Heuristic algorithms
hybrid precoding
low-resolution phase shifter (PS)
Millimeter wave (mmWave) communications
Millimeter wave technology
Phase shifters
Precoding
Radio frequency
Simulation
ISSN:2577-2465
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Zusammenfassung:Hybrid precoding combined with large-scale antenna arrays is considered as a key enabling technology for millimeter wave (mmWave) communications for its advantages in both reducing the number of power-hungry radio frequency (RF) chains and providing for spatial multiplexing. In this paper, we consider a dynamically sub-connected hybrid architecture with hardware-efficient low-resolution phase shifters (PSs) for a wide-band mmWave multi-user multi-input single-output orthogonal frequency division multiplexing (MU-MISO-OFDM) system. In this architecture, each RF chain is adaptively connected to a non-overlapping subarray corresponding to channel state information (CSI). Thus, multiple-antenna diversity can be fully utilized to mitigate the performance loss caused by the use of low-resolution PSs. Aiming at maximize the average sum-rate of the considered mmWave MU-MISO-OFDM system, we develop an iterative algorithm based on penalty dual decomposition (PDD) methods. Simulation results demonstrate the advantages of the considered dynamically sub-connected hybrid architecture.
ISSN:2577-2465
DOI:10.1109/VTC2020-Fall49728.2020.9348551