Protograph LPDC Coded Large-Scale MIMO Communications With Low-Resolution ADCs
Original version
Vu, H. D., Nguyen, T. V. & Nguyen, H. T. (2019, 6.-8. november). Protograph LPDC Coded Large-Scale MIMO Communications with Low-Resolution ADCs. I V. N. Q. Bao & T. T. Thanh (Red.), 2019 25th Asia-Pacific Conference on Communications (APCC) (s. 286-291). IEEE. https://doi.org/10.1109/APCC47188.2019.9026536Abstract
In this paper, we develop a new algorithm of joint detection and decoding receiver for the large-scale multiple-input multiple-out (LS-MIMO) coded communication systems with low-resolution ADCs. The new algorithm enables us to perform extensive experiments to address the performance and complexity tradeoff issue for LS-MIMO communication systems. Our study results indicate that 4-bit ADC is the best choice to achieve an excellent balance between the transmit power and complexity. Furthermore, the experiments reveal that the LS-MIMO system with 4-bit ADC can approach the performance of the high-resolution LS-MIMO system in the entire range of signal to noise ratio. In the other extreme, the LS-MIMO system with 2-bit ADC suffers 2.2 dB performance loss in terms of transmit power at bit error rate (BER) 10 −6 . In all test cases, an extra bit to increase the resolution from 4-bit ADC to 5-bit ADC achieves a tiny fraction of power gain in return.