The required signal processing rate in future wireless communication systems exceeds the performance of the latest electronics-based processors. Introduction of analog optical computation is one promising direction for energy-efficient processing. This paper considers a continuous-time minimum mean squared error detection for multiple-input multiple-output systems to realize signal detection using analog optical devices. The proposed method is formulated by an ordinary differential equation (ODE) and its performance at any continuous time can be theoretically analyzed. Deriving and analyzing the continuous-time system is a meaningful step to verifying the feasibility of analog-domain signal processing in the future systems. In addition, considering such an ODE brings byproducts to discrete-time detection algorithms, which can be a novel methodology of algorithm construction and analysis.

中文翻译：

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基于常微分方程的MIMO信号检测


未来无线通信系统所需的信号处理速率超过了最新的电子处理器的性能。引入模拟光学计算是节能处理的一个有前途的方向。本文考虑了多输入多输出系统的连续时间最小均方误差检测，以利用模拟光学器件实现信号检测。该方法由常微分方程（ODE）表示，并且可以从理论上分析其在任何连续时间的性能。推导和分析连续时间系统是验证未来系统中模拟域信号处理可行性的有意义的一步。此外，考虑这样的 ODE 会给离散时间检测算法带来副产品，这可能是一种新颖的算法构建和分析方法。