Image sensor communication (ISC) employing a propeller-LED transmitter encodes data along rotating light trails. We present an analytical framework that (i) constructs a single-LED, single-blink light trail model that maps optical power to pixel values, and (ii) integrates a probabilistic noise model to derive a closed-form bit-error rate (BER) using the $Q$-function. Trimodal pixel-value histograms motivate an adjacent-only inter-symbol interference (ISI) model in which the decision at segment $j$ depends on adjacent segments. Applying a hardest-pair midpoint threshold yields per-segment BER and a general BER after marginalization. We further provide practical sufficiency conditions under which adjacent-only ISI is adequate, and validate its tightness against Monte Carlo simulations and experimental results. Using the analytical BER, we select the control angle that maximizes throughput while satisfying a target BER reliability constraint.

翻译：采用螺旋桨-LED发射机的图像传感器通信（ISC）通过沿旋转光迹编码数据。我们提出一个分析框架：（i）构建了将光功率映射至像素值的单LED单闪烁光迹模型，（ii）整合概率噪声模型以通过Q函数导出闭式误码率（BER）。三峰像素值直方图促使我们建立仅相邻符号间干扰（ISI）模型，其中第j段的判决仅依赖于相邻段。采用最硬对中点阈值可导出各段BER及边缘化后的通用BER。我们进一步给出了仅需相邻ISI建模的实用充分条件，并通过蒙特卡洛仿真与实验结果验证了该模型的紧致性。利用解析BER，我们选择在满足目标BER可靠性约束下最大化吞吐量的控制角度。