论文标题
研究使用1位ADC和过采样的大规模多 - 安特纳系统的通道估计算法的研究
Study of Channel Estimation Algorithms for Large-Scale Multiple-Antenna Systems using 1-Bit ADCs and Oversampling
论文作者
论文摘要
具有较大带宽的大规模多局部系统对于将来的无线通信是基本的，在该无线通信中，基站采用大型天线阵列。在这种情况下，随着接收天线的扩大数量的增加，面临的一个问题是大量能源消耗。最近，低分辨率类似物对数字转换器（ADC）引起了很多关注。具体而言，由于其低成本和低能消耗，1位ADC适用于此类系统。本文考虑上行链路大规模多 - 安特纳系统，每个接收天线上有1位ADC。我们研究了使用均方根误差和符号误差率性能来使用过度采样来进行通道估计的好处。特别是，还研究了基于1位超采样系统的BUSSGANG分解，还研究了均方根误差的分析界限。提供了数值结果来说明所提出的通道估计算法的性能和得出的理论界限。
Large-scale multiple-antenna systems with large bandwidth are fundamental for future wireless communications, where the base station employs a large antenna array. In this scenario, one problem faced is the large energy consumption as the number of receive antennas scales up. Recently, low-resolution analog-to-digital converters (ADCs) have attracted much attention. Specifically, 1-bit ADCs are suitable for such systems due to their low cost and low energy consumption. This paper considers uplink large-scale multiple-antenna systems with 1-bit ADCs on each receive antenna. We investigate the benefits of using oversampling for channel estimation in terms of the mean square error and symbol error rate performance. In particular, low-resolution aware channel estimators are developed based on the Bussgang decomposition for 1-bit oversampled systems and analytical bounds on the mean square error are also investigated. Numerical results are provided to illustrate the performance of the proposed channel estimation algorithms and the derived theoretical bounds.
