Efficient Information Transmission Using Smart OFDM for IoT Applications

Iraqi, Youssef; Al-Dweik, Arafat

doi:10.1109/jiot.2020.2990538

Cited by 29 publications

(17 citation statements)

References 40 publications

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“…Although NB-IoT generally follows the long term evolution (LTE) standard in most features, IoT standard has higher flexibility because it can serve a broader range of QoS requirements based on the targeted application. More specifically, the standard is designed to provide connectivity to a large number of devices that have low data rates, mostly for sensing applications [27], [28].…”

Section: Prob Typementioning

confidence: 99%

Joint Optimization of Sensors Association and UAVs Placement in IoT Applications With Practical Network Constraints

2021

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Section: Prob Typementioning

confidence: 99%

Joint Optimization of Sensors Association and UAVs Placement in IoT Applications With Practical Network Constraints

2021

Self Cite

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“…5) The interleaver output B is modulated using a particular modulation scheme. The modulation type and order might be identical for the entire packet, or might be adaptively changed based on the channel conditions [16]- [18]. The modulated codeword…”

Section: Basics Of Harqmentioning

confidence: 99%

Hybrid Automatic Repeat Request (HARQ) in Wireless Communications Systems and Standards: A Contemporary Survey

Ahmed¹,

Al-Dweik²,

Iraqi³

et al. 2021

Preprint

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<div>Automatic repeat request (ARQ) schemes, and in particular hybrid-ARQ (HARQ) schemes, which jointly adopt forward error correction (FEC) and ARQ, are essential to provide reliable data transmission in wireless communications systems. However, the feedback from the receiver to the transmitter and the retransmission process used in ARQ incurs significant cost in terms of power efficiency, throughput, computational power and delay. Unfortunately, such drawbacks can limit their applications to several current and emerging technologies. More specifically, the increasing number of wireless users has create spectrum scarcity, relying on small-size batteries create power constraints, deployment of real-time applications boost the demand for ultralow delay networks, and the ultra-small low-cost internet of things (IoT) devices has limited signal processing and computation capabilities. Consequently, extensive research efforts have been dedicated to overcome the limitations inherent in HARQ. This survey paper provides an extensive literature review of the state-of-the-art HARQ techniques and discusses their integration in various wireless technologies. Moreover, it provides insights on advantages and disadvantages of particular ARQ types and discusses open problems and future directions.</div>

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“…This approach considers the presence of a noisy channel (AWGN, Phase noise, Rician noise, ITU PA3) and demonstrates the ability to overcome its impairments to achieve excellent BER performance. Due to the high-reliability performance of the proposed approach as well as its use with the OFDM modulation scheme (used in LTE systems), it can be a suitable channel coding method for NB-IoT systems provided that its energy consumption performance also demonstrates to be efficient for sensor nodes NB-IoT type of applications [43].…”

Section: Forward Error Correction (Fec) Approachesmentioning

confidence: 99%

An Energy-Efficient and Adaptive Channel Coding Approach for Narrowband Internet of Things (NB-IoT) Systems

Migabo

Djouani

Kurien

2020

Sensors

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Most of the current research work on the Narrowband Internet of Things (NB-IoT) is focused on enhancing its network coverage. Many of the existing NB-IoT channel coding techniques are based on repeating transmission data and control signals as a way of enhancing the network’s reliability and therefore, enabling long-distance transmissions. Although most of these efforts are made at the expense of reducing the energy consumption of the NB-IoT network, they do not always consider the channel conditions. Therefore, this work proposes a novel NB-IoT Energy-Efficient Adaptive Channel Coding (EEACC) scheme. The EEACC approach is a two-dimensional (2D) approach which not only selects an appropriate channel coding scheme based on the estimated channel conditions (dynamically classified as bad, medium or good from initial based on a periodically assessed BLER performance outcome) but also minimizes the transmission repetition number under a pre-assessed probability of successful transmission (based on the ratio of previous successful transmissions over the total number of transmissions). This results in creating a single mixed gradient based on which a higher or lower Modulating Coding Scheme (MCS) is selected on each transmission. It is aimed at enhancing the overall energy efficiency of the network by dynamically selecting the appropriate Modulation Coding Scheme (MCS) number and efficiently minimizing the transmission repetition number. Link-level simulations are performed under different channel conditions (good, medium, or bad) considerations to assess the performance of the proposed up-link adaptation technique for NB-IoT. The obtained results demonstrate that the proposed technique outperforms the existing Narrowband Link Adaptation (NBLA) as well as the traditional repetition schemes in terms of the achieved energy efficiency as well as network reliability, latency, and scalability.

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Efficient Information Transmission Using Smart OFDM for IoT Applications

Cited by 29 publications

References 40 publications

Joint Optimization of Sensors Association and UAVs Placement in IoT Applications With Practical Network Constraints

Joint Optimization of Sensors Association and UAVs Placement in IoT Applications With Practical Network Constraints

Hybrid Automatic Repeat Request (HARQ) in Wireless Communications Systems and Standards: A Contemporary Survey

An Energy-Efficient and Adaptive Channel Coding Approach for Narrowband Internet of Things (NB-IoT) Systems

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