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Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
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A Software and Hardware Cooperation Method for Full Nyquist Rate Transmission Symbol Synchronization at E-Band

Fei Wang1, Zhiqun Cheng1, Hang Li1

  • 1School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China.

Sensors (Basel, Switzerland)
|November 26, 2022
PubMed
Summary

This study introduces a novel software-hardware symbol synchronization method for full Nyquist rate transmission systems. It improves sampling accuracy and bit error rate (BER) performance by precisely controlling the sampling phase.

Keywords:
E-bandfull Nyquist rate transmissioninitial phase acquisitionphase adjustable clockphase trackingsymbol synchronization

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Area of Science:

  • Digital Communications
  • Signal Processing

Background:

  • Full Nyquist rate transmission systems with large bandwidth are highly sensitive to sampling phase.
  • Traditional symbol synchronization methods are unsuitable due to single-sample-per-symbol periods and channel interference.
  • High data throughput in these systems demands minimized resource utilization for sampling data processing.

Purpose of the Study:

  • To develop an efficient symbol synchronization method for full Nyquist rate transmission systems.
  • To address the challenges of sampling phase sensitivity and resource utilization.
  • To enhance system accuracy and bit error rate (BER) performance.

Main Methods:

  • A hybrid software-hardware approach for symbol synchronization.
  • Initial phase acquisition using Chirp signal and the Maximum-Likelihood Estimation (MOE) criterion.
  • Real-time phase tracking via an on-line gradient table and frequency domain analysis of known data.
  • Utilization of a phase-adjustable clock for both acquisition and tracking processes.

Main Results:

  • Hardware verification demonstrated that the sampling phase is maintained close to the optimal phase.
  • The proposed method ensures high accuracy in sampling data.
  • Significant improvement in the system's bit error rate (BER) performance was achieved.

Conclusions:

  • The combined software-hardware symbol synchronization method effectively overcomes the limitations of full Nyquist rate systems.
  • This approach ensures reliable data sampling and enhances overall system performance.
  • The method offers a practical solution for optimizing resource utilization in high-throughput communication systems.