Preamble symbol receiving device
A technology of a preamble symbol and a receiving device, applied in the field of broadcast communication, can solve the problems of inaccurate channel estimation, prone to misjudgment, low robustness, etc., so as to avoid amplifying noise, solve the problem of misjudgment, and improve the accuracy of the system Effect
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Embodiment 1
[0050] figure 1 It is a schematic flowchart of a method for receiving a preamble symbol in Embodiment 1 of the present invention; figure 2 It is a schematic flow chart of analyzing signaling in the preamble symbol receiving method in Embodiment 1 of the present invention.
[0051] Such as figure 1 As shown, the method for receiving the preamble symbol in this embodiment is applicable when the method for sending the preamble symbol used by the sending end meets the predetermined sending rule, and the method for receiving the preamble symbol includes the following steps:
[0052] Step S1-1: judging whether there is a leading symbol in the processed baseband signal; and
[0053] Step S1-2: Determine the position of the preamble symbol in the physical frame and parse out the signaling information carried by the preamble symbol.
[0054] Among them, such as figure 2 As shown, in step S1-2 of determining the position of the preamble symbol in the physical frame and analyzing t...
Embodiment 2
[0177] Figure 12 It is a schematic flow chart of analyzing signaling in the method for receiving preamble symbols in Embodiment 2 of the present invention, and the flow of analyzing signaling is included in such as figure 1 In the receiving method of the leading symbol corresponding to the first embodiment, the overall overview of the receiving method of the leading symbol is omitted in the second embodiment, Figure 12 for figure 2 Another implementation of .
[0178] Such as Figure 12 As shown, in step S1-2 of determining the position of the preamble symbol in the physical frame and analyzing the signaling information carried by the preamble symbol, the signaling analysis step includes the following specific steps:
[0179] Step S2-2-1: performing Fourier transform on the main time domain signal of each time domain symbol to extract effective subcarriers;
[0180] Step S2-2-2: Perform predetermined mathematical operations on each effective subcarrier and the known sub...
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