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Alignment method and system for 2-way parallel data signals

A technology of data signal and digital signal, applied in the field of alignment method and system of 2-channel parallel data signal, can solve the problems of data demodulation error, unstable internal structure, and difficult data synchronization at the receiving end, so as to avoid demodulation error, suitable for promotion

Active Publication Date: 2019-08-06
WUHAN POST & TELECOMM RES INST CO LTD
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Problems solved by technology

[0003] However, when going from ADC to FPGA or ASIC, it may be difficult to synchronize the data of each channel due to circuit wiring delay or the internal structure of the high-speed transceiver channel is unstable, and N (N is a positive integer) data is misplaced between each channel of data. Symbol phenomenon, which leads to data demodulation error at the receiving end

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  • Alignment method and system for 2-way parallel data signals
  • Alignment method and system for 2-way parallel data signals
  • Alignment method and system for 2-way parallel data signals

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0021] see figure 1 As shown, the method for aligning two parallel data signals in the embodiment of the present invention includes the following steps:

[0022] S1: Generate a test analog signal with the same symbol period as the 2-way parallel analog signal that needs to be aligned (this embodiment aligns the 2-way parallel data signal), and the test analog signal is preferably PRBS (Pseudo-Random Binary Sequence, pseudo-random binary sequence ) signal; the test analog signal is divided into 2 routes, and after the analog-to-digital conversion is performed on the 2 test analog signals respectively, 2 test digital signals are obtained: test digital signal 1 and test digital signal 2, which are transferred to S2.

[0023] S2: In the two test digital signals respectively, synchronously acquire sequences of N symbol period lengths: I(n) and Q(n...

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PUM

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Abstract

The invention discloses an alignment method and system of multiple paths of parallel data signals, and relates to the field of reception of multiple paths of parallel signals. The method comprises the following steps: performing analog-to-digital conversion on two paths of test analog signals to obtain two paths of test digital signals, computing two paths of adjustment parameters according to the two paths of test digital signals, adjusting the corresponding parallel digital signals according to the adjustment parameters, and the adjusted parallel digital signals are parallel data automatically aligned by the alignment method and system disclosed by the invention. By adoption of the alignment method and system disclosed by the invention, the paths of parallel data can be aligned simply and accurately, receiving terminal data demodulation errors are avoided, use of people is very convenient, and thus the alignment method and system is suitable for popularization.

Description

technical field [0001] The invention relates to the field of receiving multi-channel parallel signals, in particular to a method and system for aligning 2-channel parallel data signals. Background technique [0002] In optical communication and wireless communication systems, multiple channels of parallel analog signals, such as the I channel and Q channel of a QPSK (Quadrature Phase Shift Keying, Quadrature Phase Shift Keying) signal, are often received and processed in real time. Multi-channel parallel analog signals are generally converted into multiple parallel digital signals through multiple high-speed ADC (Analog Digital Converter, analog-to-digital converter) chips, and then use high-speed transceiver equipment to receive parallel digital signals and process them. The transceiver device is, for example, an FPGA (Field Programmable Gate Array, Field Programmable Gate Array) and an ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00
CPCH04L7/0016
Inventor 孟令恒曾韬李婕江风
Owner WUHAN POST & TELECOMM RES INST CO LTD
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