To reduce the hardware cost and power consumption in millimeter wave (mmWave) multiuser massive multiple-input multiple-output (MIMO) systems, a quantized hybrid transmit model with low-resolution digital-to-analog converters (DACs) is introduced. A correlation-based hybrid precoding algorithm is proposed as an attractive low-complexity approach for the considered system. Using the Bussgang theorem and the additive quantization noise model (AQNM), we derive the asymptotic downlink achievable rate expressions. The rate loss caused by low-resolution DACs shows negligible quantization distortion at low power regime. Numerical results demonstrate the superiority of the proposed algorithm over other algorithms in terms of the rate performance.
Hybrid Precoding for Millimeter Wave Multiuser Massive MIMO Systems with Low-Resolution DACs
01.05.2020
161828 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch