Age of Information for Short-Packet Covert Communication
| العنوان: | Age of Information for Short-Packet Covert Communication |
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| المؤلفون: | Shihao Yan, Feng Shu, Weiwei Yang, Xingbo Lu, Zan Li |
| المصدر: | IEEE Wireless Communications Letters. 10:1890-1894 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Linear programming, business.industry, Computer science, Network packet, Data_CODINGANDINFORMATIONTHEORY, Transmitter power output, Expression (mathematics), Constraint (information theory), Transmission (telecommunications), Control and Systems Engineering, Covert, Metric (mathematics), Electrical and Electronic Engineering, business, Computer network |
| الوصف: | In this letter, we develop a new framework to jointly characterize covertness and timeliness of short-packet communications, in which a new metric named covert age of information (CAoI) is first proposed and then a closed-form expression for the average CAoI is derived. Our examination explicitly reveals the tradeoff between communication covertness and timeliness affected by the block-length, transmit power and prior transmission probability. Multiple transmission designs are tackled in order to minimize the average CAoI subject to covertness constraint, where the resultant differences relative to the designs with traditional metrics (e.g., effective covert rate, AoI) as objective functions are clarified. Our examination demonstrates that the optimal block-length is not the largest one, which is optimal in delay-constrained covert communication without considering the communication timeliness, and the optimal prior transmission probability may not be 1/2, which has been widely assumed in the literature of covert communications. |
| تدمد: | 2162-2345 2162-2337 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::5d37c5975719172e078ce3fd949b94ae https://doi.org/10.1109/lwc.2021.3085025 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........5d37c5975719172e078ce3fd949b94ae |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21622345 21622337 |
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