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Interpolation-based all-digital high-speed parallel timing synchronization method

A timing synchronization, all-digital technology, used in synchronization devices, digital transmission systems, electrical components, etc., can solve the problems of system characteristics, difficult to achieve cost control, difficult to achieve timing synchronization circuits, etc., to achieve accurate timing synchronization and reduce demand Effect

Inactive Publication Date: 2014-04-23
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new technology allows two different types of data streams (parallel) at once - one faster than another type called serial). It achieves this through time alignment between these data streames while also ensuring that each piece of equipment receives its own clock signal correctly during communication.

Problems solved by technology

The technical problem addressed in this patented text relates to improving the performance of high -bit (HB) serially connected components such as receivers used in wireline communications systems while also reducing their power consumption during operation without compromising signal quality.

Method used

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  • Interpolation-based all-digital high-speed parallel timing synchronization method
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  • Interpolation-based all-digital high-speed parallel timing synchronization method

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Embodiment Construction

[0023] Below, the present invention will be further described in conjunction with the accompanying drawings.

[0024] combine figure 1 As shown, an all-digital high-speed parallel timing synchronization method based on interpolation includes the following steps:

[0025] (1) The parallel interpolation filter performs timing synchronous interpolation on the received N channels of parallel digital signals, N is a natural number greater than 1; the parallel interpolation filter outputs the interpolated N channels of parallel digital signals to the outside, and at the same time interpolates The rear N parallel digital signals are input to the parallel timing error detector;

[0026] Wherein, the parallel interpolation filter is composed of multiple independent interpolation filters in parallel; the interpolation filter is composed of polynomial-based direct type interpolation filters.

[0027] (2) The parallel timing error detector calculates the timing error signals of the N pa...

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Abstract

The invention discloses an interpolation-based all-digital high-speed parallel timing synchronization method. Timing synchronization interpolation is performed on the received parallel data signal by a parallel interpolation filter, and the parallel data signal after interpolation is outputted; a parallel timing error detector calculates a timing error signal of the parallel data signal after the interpolation, and an average timing error signal is obtained; the average timing error signal is filtered via a loop filter and a step adjusting signal is outputted; and a parallel digital controlled oscillator adjusts internal control characters according to the step adjusting signal, and then the interpolation is performed on the parallel digital signal by the parallel interpolation filter via controlling at an optimal sampling point so that timing synchronization is realized. The interpolation-based all-digital high-speed parallel timing synchronization method is suitable for any modulation methods and encoding modes under high-speed transmission rate of hundreds of megabytes bits per second and even gigabits per second without being influenced by carrier wave frequency deviation and phase deviation, and timing synchronization can be accurately completed without carrier wave recovery.

Description

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Claims

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Application Information

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Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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