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A symbol synchronization device of a wireless communication test system
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A Technology of Symbol Synchronization and Testing System
Active Publication Date: 2022-03-15
北京为准智能科技有限公司
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However, in this system, the sampling frequency cannot be quickly adjusted to obtain a synchronous clock signal, and the efficiency of symbol synchronization is low and the power consumption is high
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Embodiment 1
[0030] This embodiment provides a symbol synchronization device for a wireless communication test system, combining figure 1 , including a transmitting module, a receiving module and a clock synchronization module, the transmitting module is used to transmit a test signal, the receiving module is used to receive the test signal, and the clock synchronization module is used to analyze the test signal and perform symbol synchronization ;
[0031] The test signal includes a synchronization signal and a data signal, and the clock synchronization module obtains a synchronization sampling parameter after processing the synchronization signal, and samples the data signal based on the synchronization sampling parameter;
[0032] The clock synchronization module includes a frequency modulation unit, a sampling unit and an analysis unit, the sampling unit is used to sample signals, the frequency modulation unit is used to control the sampling frequency of the sampling unit, and the anal...
Embodiment 2
[0045]This embodiment includes all the content of Embodiment 1, and provides a symbol synchronization device for a wireless communication test system, including a transmitting module, a receiving module and a clock synchronization module, the transmitting module is used to transmit test signals, and the receiving module For receiving a test signal, the clock synchronization module is used for analyzing the test signal;
[0046] The test signal includes a synchronization signal and a data signal, and the clock synchronization module obtains a synchronization sampling parameter after processing the synchronization signal, and samples the data signal based on the synchronization sampling parameter;
[0047] combine figure 2 , the synchronization signal is composed of several groups of ordered signals, and each group of ordered signals is composed of alternating high and low levels with a progressive relationship in duration, and the duration of the i-th level is i transmission c...
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Abstract
The present invention provides a symbol synchronization device of a wireless communication test system, including a transmitting module, a receiving module and a clock synchronization module, the transmitting module is used for transmitting test signals, the receiving module is used for receiving test signals, and the clock synchronization module The module is used to analyze the test signal, the test signal includes a synchronization signal and a data signal, the clock synchronization module processes the synchronization signal to obtain a synchronization sampling parameter, and samples the data signal based on the synchronization sampling parameter, The clock synchronization module includes a frequency modulation unit, a sampling unit and an analysis unit; the analysis unit in this device analyzes the sampling data of the synchronization signal by the sampling unit, adjusts the frequency modulation unit in real time, and then changes the sampling frequency to quickly obtain synchronization data.
Description
technical field [0001] The present disclosure generally relates to the field of signal processing, and more particularly relates to a symbol synchronization device of a wireless communication testing system. Background technique [0002] In a digital communication system, in order to recover the data signal from the received signal at the receiving end, the output signal of the receiving filter in the demodulator must be periodically sampled and judged at the symbol rate, so there must be a A clock signal that is synchronized with the symbol rate of the received digital baseband signal to obtain accurate sampling instant or timing. The process of obtaining this synchronized clock signal is called symbol synchronization. [0003] Many synchronization systems have been developed now. After a large number of searches and references, we found that the existing synchronization systems are such as the systems disclosed by the publication numbers KR100364542B1, KR1019970000064B1, C...
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