R. Hashemi, S. Ali, N. H. Mahmood and M. Latva-aho, "Average Rate Analysis of RIS-aided Short Packet Communication in URLLC Systems," 2021 IEEE International Conference on Communications Workshops (ICC Workshops), 2021, pp. 1-6, doi: 10.1109/ICCWorkshops50388.2021.9473757
Average rate analysis of RIS-aided short packet communication in URLLC systems
|Author:||Hashemi, Ramin1; Ali, Samad1; Mahmood, Nurul Huda1;|
1Centre for Wireless Communications (CWC), University of Oulu, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 0.8 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2021081343199
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2021-08-13
In this paper, the average achievable rate of a re-configurable intelligent surface (RIS) aided factory automation is investigated in finite blocklength (FBL) regime. First, the composite channel containing the direct path plus the product of reflected paths through the RIS is characterized. Then, the distribution of the received signal-to-noise ratio (SNR) is matched to a Gamma random variable whose parameters depend on the total number of RIS elements as well as the channel pathloss. Next, by assuming FBL model, the achievable rate expression is identified and the corresponding average rate is elaborated based on the proposed SNR distribution. The phase error due to quantizing the phase shifts is considered in the simulation. The numerical results show that Monte Carlo simulations conform to the matched Gamma distribution for the received SNR for large number of RIS elements. In addition, the system reliability indicated by the tightness of the SNR distribution increases when RIS is leveraged particularly when only the reflected channel exists. This highlights the advantages of RIS-aided communications for ultra-reliable low-latency communications (URLLC) systems. The reduction of average achievable rate due to working in FBL regime with respect to Shannon capacity is also investigated as a function of total RIS elements.
IEEE International Conference on Communications workshop
|Pages:||1 - 5|
2021 IEEE International Conference on Communications Workshops (ICC Workshops)
IEEE International Conference on Communications Workshops
|Type of Publication:||
B3 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work was supported by the Academy of Finland 6Genesis Flagship project under grant 318927.
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
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