PHYSICAL LAYER ABSTRACTION FOR PERFORMANCE EVALUATION OF LEO SATELLITE SYSTEMS FOR IOT USING TIME-FREQUENCY ALOHA SCHEME

被引：0

作者：

Cluzel, Sylvain ^{[1
]}

Dervin, Mathieu ^{[5
]}

Radzik, Jose ^{[3
]}

Cazalens, Sonia ^{[4
]}

Baudoin, Cedric ^{[5
]}

Dragomirescu, Daniela ^{[2
]}

机构：

[1] Lab TeSA, Toulouse, France

[2] CNRS, LAAS, INSA, Toulouse, France

[3] Univ Toulouse, SUPAERO, ISAE, Toulouse, France

[4] Ctr Natl Etud Spatiales, Toulouse, France

[5] Thales Alenia Space, Toulouse, France

来源：

2018 IEEE GLOBAL CONFERENCE ON SIGNAL AND INFORMATION PROCESSING (GLOBALSIP 2018) | 2018年

关键词：

Satellite; NB-IoT; LPWAN; Time-Frequency Aloha; Mutual information;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

One of the main issues in using a Low Earth Orbit (LEO) satellite constellation to extend a Low-Powered Wide Area Network is the frequency synchronization. Using a link based on random access solves this concern, but also prevents delivery guarantees, and implies less predictable performance. This paper concerns the estimation of Bit Error Rate (BER) and Packet Error Rate (PER) using physical layer abstractions under a time and frequency random scheme, namely Time and Frequency Aloha. We first derive a BER calculation for noncoded QPSK transmission with one collision. Then, we use the 3GPP LTE NB-IoT coding scheme. We analyze the interference that could be induced by repetition coding scheme and propose an efficient summation to improve the decoder performance. Finally, to estimate a PER for any collided scenario, we propose a physical layer abstraction, which relies on an equivalent Signal-to-Noise Ratio (SNR) calculation based on Mutual Information.

引用

页码：1076 / 1080

页数：5

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