Interference Cancellation in Overlay Cognitive Radio Based on OFDM Using Nonlinear Kalman-Filter for Channel Estimation

Abdou, Ahmed; Abdo, Ali; Jamoos, Ali

doi:10.1109/pimrc.2019.8904170

Cited by 1 publication

(2 citation statements)

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“…In this section, we compare some existing literature related to DSS interference. The authors of [37] proposed a zero-breaking beamforming approach for interference cancellation in a cognitive radio. However, these authors focused their research on the channel estimation problem that accompanies the adoption of the zero-breaking beamforming approach.…”

Section: Related Workmentioning

confidence: 99%

“…This reference only mentions the idea of dynamic spectrum access as a candidate solution and does not provide an in-depth analysis, and the proposed interference solution does not explicitly target the DSS interference scenario. Reference [38] has a similar research direction as [37], which is also based on dynamic spectrum access for a cognitive radio. The authors of [38] proposed three solutions for mobile spectrum shortage, namely, interleaved CR, underlay CR, and overlay CR.…”

Section: Related Workmentioning

confidence: 99%

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Practical Performance Analysis of Interference in DSS System

Wei

Xie

et al. 2023

Applied Sciences

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The 5G network is developing rapidly. However, due to spectrum resource limitation, it is expected to use the 5G network to ensure high resource utilization and network efficiency, while keeping part of 4G in the same band for existing 4G users. Dynamic spectrum-sharing (DSS) technology enables 4G/5G wireless networks to coexist in scarce spectrum resources and dynamically allocates spectrum resources in the same band. 4G/5G DSS has been successfully commercialized in some countries such as Germany and Brazil. However, complex 4G/5G DSS networks will introduce intra-frequency interference in the inter-system, which will affect network performance. Therefore, we innovatively proposed two interference mitigation schemes: buffer setting and rate matching. Furthermore, we have verified the practical performance of both schemes in a commercial network for the first time to determine the feasibility of the schemes. From theory, simulation, and practical analysis, both schemes can effectively mitigate the interference of the inter-system introduced by DSS: increasing the network rate by 60% in the interference environment and improving the user experience in the DSS architecture.

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Section: Related Workmentioning

confidence: 99%