Practical Residual Interference After Cancellation for Constant Envelope Modulation With Data-Aided Synchronization

Lin, Qiongjie; Weitnauer, Mary Ann

doi:10.1109/access.2018.2876641

Cited by 2 publications

(3 citation statements)

References 25 publications

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“…Ideally, this term should be zero. However, due to the imperfect SIC operation in a practical system, this additional interference is inevitably present and can originate due to multiple factors such as asynchronization during signal reconstruction and subtraction [20], or phase and amplitude mismatch at the receiver hardware [18]. Throughout this work, we assume that ξ is a fixed value that is identical for all the devices.…”

Section: A Noma Frameworkmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Downlink Connectivity in NB-IoT Networks Employing NOMA with Imperfect SIC

Mishra

Salaün

Chen

et al. 2021

2021 Joint European Conference on Networks and Communications &Amp; 6G Summit (EuCNC/6G Summit)

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We study the problem of maximizing the number of served devices in a non-orthogonal multiple access (NOMA) based Narrowband Internet of Things (NB-IoT) network for supporting massive connectivity in the downlink. We analyze this problem under practical system limitations of imperfect successive interference cancellation (SIC) at the receiver along with data rate, power and bandwidth constraints. We propose a strategy for joint device and power allocation through an iterative solution for a system of linear equations on each sub-carrier that maximizes the number of connected devices. We evaluate the performance of the proposed solution over a wide range of service scenarios through extensive computer simulations and demonstrate the sensitivity of connectivity in power domain NOMA based NB-IoT systems to the residual interference resulting from imperfect SIC.

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Section: A Noma Frameworkmentioning

confidence: 99%

“…Furthermore, it is well known that even a small amount of this residual interference can severely affect a NOMA system's performance [16]- [19]. The impact of residual interference in the context on LPWA networks is studied through test-bed experiments in [20].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Downlink Connectivity in NB-IoT Networks Employing NOMA with Imperfect SIC

Mishra

Salaün

Chen

et al. 2021

2021 Joint European Conference on Networks and Communications &Amp; 6G Summit (EuCNC/6G Summit)

View full text Add to dashboard Cite

show abstract

“…More recently, the adoption of Universal Software Radio Peripherals (USRP) dedicated devices [12] made it possible to improve the accuracy of the interference generation systems to higher levels and has been adopted as a possible solution for testing interference-aware power control mechanisms [13], [14]. However, they currently represent a too costly solution because of the need of specialized hardware, which makes it difficult an adoption on large scale testbeds.…”

Section: Related Workmentioning

confidence: 99%

In-Band Controllable Radio Interference Generation for Wireless Sensor Networks

Lattanzi

Freschi

2019

IEEE Access

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Interference signals negatively impact the performance of wireless embedded systems. The increased packet losses, delays, and energy consumption experienced by devices operating in environments subject to interference are particularly critical in constrained systems such as wireless sensor networks. The need to design and test systems for mitigating the effects of interference prompts for the capability of reproducing in a controllable way suitable interference signals. Solutions have been proposed recently, which tackle the problem by making use of 802.15.4 compliant radio transceivers, like those available on board of commonly used sensor nodes, thus paving the way for low cost and repeatable generation of interference which could reliably emulate real-world scenarios, for instance densely deployed networks. In this paper, we present an investigation regarding the emulation of interference sources by means of 802.15.4 radios on novel 32-bit wireless system-on-chip. The study is based on an extensive experimental evaluation, providing novel insights into the main features of the system. In particular, the effects of interference on the communication link, measured in terms of packet reception rate, are investigated for different parameters (namely, duty cycle and power of the interference signal, communication protocols, and payload size), and results are discussed concerning the feasibility of emulating background noise by means of the analyzed techniques.

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Practical Residual Interference After Cancellation for Constant Envelope Modulation With Data-Aided Synchronization

Cited by 2 publications

References 25 publications

Analysis of Downlink Connectivity in NB-IoT Networks Employing NOMA with Imperfect SIC

Analysis of Downlink Connectivity in NB-IoT Networks Employing NOMA with Imperfect SIC

In-Band Controllable Radio Interference Generation for Wireless Sensor Networks

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