系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (1): 299-306.doi: 10.12305/j.issn.1001-506X.2022.01.37

• 通信与网络 • 上一篇    下一篇

低分辨率ADC下MIMO-OFDM系统中的广义Turbo信号检测

王华华, 李延山*, 余永坤   

  1. 重庆邮电大学通信与信息工程学院, 重庆 400065
  • 收稿日期:2020-11-18 出版日期:2022-01-01 发布日期:2022-01-19
  • 通讯作者: 李延山
  • 作者简介:王华华(1981—), 男, 高级工程师, 硕士, 主要研究方向为嵌入式系统(移动通信基带处理系统)、通信软件开发|李延山(1996—), 男, 硕士研究生, 主要研究方向为移动通信物理层算法|余永坤(1994—), 男, 硕士研究生, 主要研究方向为移动通信物理层算法
  • 基金资助:
    国家科技重大专项(2017ZX03001021-004)

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

Huahua WANG, Yanshan LI*, Yongkun YU   

  1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2020-11-18 Online:2022-01-01 Published:2022-01-19
  • Contact: Yanshan LI

摘要:

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 division multiplexing, OFDM)量化系统中的应用方案。通过将单输入单输出(single input single output, SISO)量化系统中的广义Turbo信号检测算法推广到MIMO-OFDM量化系统,实现了该算法的低复杂度实现方案。在4×32 MIMO-OFDM系统中,当误比特率为10-3时,GTurbo算法与广义近似消息传递(generalized approximate message passing, GAMP)算法相比能得到约3 dB的性能增益。仿真表明,与GAMP算法相比,所提算法更适用于大规模天线阵列系统。

关键词: 低分辨率模数转换器, 多输入多输出-正交频分复用量化系统, 信号检测

Abstract:

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.

Key words: low resolution analog to digital converter (ADC), multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) quantization system, signal detection

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