低分辨率ADC下MIMO-OFDM系统中的广义Turbo信号检测

针对高分辨率模数转换器(analog-to-digital converter,ADC)接收机给大规模多输入多输出(multiple input multiple output,MIMO)系统带来的硬件成本昂贵和高功耗问题,研究了低分辨率ADC在毫米波MIMO正交频分复用(orthogonal frequency di...

Generalized Turbo signal detection in MIMO-OFDM system with low resolution ADCs

Aiming at the high hardware cost and high power consumption caused by high-resolution analog-to-digital converter (ADC) receiver to large-scale multiple input multiple output (MIMO) system, the application scheme of low-resolution ADC in millimeter wave MIMO orthogonal frequency division multiplexing (OFDM) quantization system is studied. By extending the generalized Turbo signal detection algorithm in single input single output (SISO) quantization system to MIMO-OFDM quantization system, the low complexity implementation scheme of the algorithm is realized. In MIMO-OFDM system, when the bit error rate is 10^-3, the GTurbo algorithm can obtain about 3dB performance gain compared with the generalized approximate message passing (GAMP) algorithm. Simulation results show that compared with the GAMP algorithm, the proposed algorithm is more suitable for large-scale antenna array system.