WFRF:(Minhaj Syed Usama)
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How SIC-enabled LoRa Fares under Imperfect Orthogonality?
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- Minhaj, Syed Usama (author)
- Natl Univ Sci & Technol NUST, Sch Elect Engn & Comp Sci SEECS, Islamabad, Pakistan.
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- Ali, Syed Haider (author)
- Natl Univ Sci & Technol NUST, Sch Elect Engn & Comp Sci SEECS, Islamabad, Pakistan.
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- Bhatti, Muhammad Talha (author)
- Natl Univ Sci & Technol NUST, Sch Elect Engn & Comp Sci SEECS, Islamabad, Pakistan.
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- Natl Univ Sci & Technol NUST, Sch Elect Engn & Comp Sci SEECS, Islamabad, Pakistan Institutionen för informationssystem och –teknologi (creator_code:org_t)
- IEEE, 2021
- 2021
- English.
- In: IWCMC 2021. - : IEEE. - 9781728186160 ; , s. 729-734
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- With the increase of connected Internet-of-things (IoT) devices, the need for low-power wide-area networks (LP-WANs) is imminent, and LoRaWAN is one such technology that offers an elegant solution to the problem of long-range communication and battery consumption. A parameter of special interest in LoRaWAN is the spreading factor (SF), and it is often assumed that communication between different SFs is independent of each other. However, this claim has been practically debunked by many works, proving that SFs have imperfect orthogonality. To maximize connectivity and throughput, several techniques have been introduced, such as non-orthogonal-multiple-access (NOMA) and dynamic resource allocation. NOMA is getting a lot of attention recently, especially for IoT networks, because it embraces interference and tries to obtain desired information packets from corrupted ones. Furthermore, NOMA can be easily implemented on the base-station side by using the principle of successive interference cancellation (SIC). In this paper, we investigate how SIC, under the assumption of imperfect orthogonality of SF channels, can be used to increase the performance of the system. We find the expressions for success and coverage probability considering various SF allocation schemes and found the most efficient scheme for different scenarios.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Low power wide area networks
- LoRaWAN
- interference analysis
- stochastic geometry
- successive interference cancellation
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- ref (subject category)
- kon (subject category)
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