.png){kind=icon}
返回
Collaborative Edge AI Inference Over Cloud-RAN
.png){kind=icon}
OA
AI
DOI：10.1109/TCOMM.2024.3388488.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
In this paper, a cloud radio access network (Cloud-RAN) based collaborative edge AI inference architecture is proposed. Specifically, geographically distributed devices capture real-time noise-corrupted sensory data samples and extract the noisy local feature vectors, which are then aggregated at each remote radio head (RRH) to suppress sensing noise. To realize efficient uplink feature aggregation, we allow each RRH receives local feature vectors from all devices over the same resource blocks simultaneously by leveraging an over-the-air computation (AirComp) technique. Thereafter, these aggregated feature vectors are quantized and transmitted to a central processor (CP) for further aggregation and downstream inference tasks. Our aim in this work is to maximize the inference accuracy via a surrogate accuracy metric called discriminant gain, which measures the discernibility of different classes in the feature space. The key challenges lie on simultaneously suppressing the coupled sensing noise, AirComp distortion caused by hostile wireless channels, and the quantization error resulting from the limited capacity of fronthaul links. To address these challenges, this work proposes a joint transmit precoding, receive beamforming, and quantization error control scheme to enhance the inference accuracy. Extensive numerical experiments demonstrate the effectiveness and superiority of our proposed optimization algorithm compared to various baselines.
Keyword:
Task analysis
Feature extraction
Collaboration
Distortion
Sensors
Computer architecture
Wireless networks
Cloud radio access network
edge AI
edge inference
over-the-air computation
期刊
IF:
8.3
论文数:
1.2W
被引数:
3.6W
机构
引用论文
Wirelessly Powered Data Aggregation for IoT via Over-the-Air Function Computation: Beamforming and Power Control通过空中功能计算实现物联网的无线供电数据聚合: 波束成形和功率控制
.png){kind=icon}
PREAI
分享收藏
A Wide-Angle E-Plane Scanning Linear Array Antenna With Wide Beam Elements具有宽波束单元的广角E平面扫描线性阵列天线
PREAI
分享收藏
查看更多内容