A reconfigurable RF front-end for 5G direct sampling receivers with an optimized calibration scheme

Ghotbi, Iman; Behmanesh, Baktash; Törmänen, Markus

doi:10.1016/j.aeue.2023.155112

AEU - International Journal of Electronics and Communications

2024

DOI: 10.1016/j.aeue.2023.155112

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A reconfigurable RF front-end for 5G direct sampling receivers with an optimized calibration scheme

Iman Ghotbi,

Baktash Behmanesh,

Markus Törmänen

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Re-configurable digital bandwidth interleaved sampling system based on fast spectrum sensing

Chen,

Ye,

Pan

et al. 2024

Review of Scientific Instruments

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The complexity of systems with parallel acquisition architectures has increased sharply with the continuous growth of signal bandwidth, and sampling precision has been greatly challenged. Considering that the signal to be measured usually exhibits sparsity in the frequency domain, this paper proposes a re-configurable bandwidth interleaved acquisition architecture to maximize test flexibility and accuracy. The sampling process is divided into two stages: sensing and re-configurable acquisition. In the sensing stage, the signal spectrum distribution is roughly understood using a sparse Fourier transform. Based on the spectrum sensing results, the subband selection and the adaptive adjustment of the mixing local oscillator in the acquisition system are performed. Ultimately, these steps enhance sampling accuracy. This paper verifies the effectiveness of this method on a 10 GHz acquisition system, demonstrating that it can significantly reduce data redundancy. In addition, it improves acquisition accuracy compared to traditional bandwidth interleaved systems. The experimental results indicate that re-configurable sampling can significantly improve the quality of sampling results. This is evidenced by a signal-to-noise ratio improvement of over 7.4 dB and a spurious-free dynamic range improvement of over 4.7 dB compared to traditional sampling results.

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Re-configurable digital bandwidth interleaved sampling system based on fast spectrum sensing

Chen,

Ye,

Pan

et al. 2024

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

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A reconfigurable RF front-end for 5G direct sampling receivers with an optimized calibration scheme

Cited by 1 publication

References 31 publications

Re-configurable digital bandwidth interleaved sampling system based on fast spectrum sensing

Re-configurable digital bandwidth interleaved sampling system based on fast spectrum sensing

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