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Resource Allocation for Uplink Cell-Free Massive MIMO enabled URLLC in a Smart Factory by Peng, Qihao; Ren, Hong; Pan, Cunhua; Liu, Nan; Elkashlan, Maged is a scholarly article available to read on EtoBox.

What is Resource Allocation for Uplink Cell-Free Massive MIMO enabled URLLC in a Smart Factory about?

Smart factories need to support the simultaneous communication of multiple industrial Internet-of-Things (IIoT) devices with ultra-reliability and low-latency communication (URLLC). Meanwhile, short packet transmission for IIoT applications incurs performance loss compared to traditional long packet transmission for human-to-human communications. On the other hand, cell-free massive multiple-input and multiple-output (CF mMIMO) technology can provide uniform services for all devices by deploying distributed access points (APs). In this paper, we adopt CF mMIMO to support URLLC in a smart factory. Specifically, we first derive the lower bound (LB) on achievable uplink data rate under the finite blocklength (FBL) with imperfect channel state information (CSI) for both maximum-ratio combining (MRC) and full-pilot zero-forcing (FZF) decoders. \textcolor{black}{The derived LB rates based on the MRC case have the same trends as the ergodic rate, while LB rates using the FZF decoder tightly match the ergodic rates}, which means that resource allocation can be performed based on the LB data rate rather the exact ergodic data rate under FBL. The \textcolor{black}{log-function method} and su

Author

Peng, Qihao; Ren, Hong; Pan, Cunhua; Liu, Nan; Elkashlan, Maged

Published

2022

Language

EN