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A peak-to-average ratio suppression method for underwater acoustic communication based on multi-carrier

A technology of peak-to-average ratio suppression and underwater acoustic communication, applied in the field of communication, can solve the problems of high cost and increase the complexity of OFDM system, and achieve the effects of increasing adaptability, reducing construction cost and increasing complexity

Active Publication Date: 2021-04-02
XIDIAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods will increase the complexity of the OFDM system, and the cost is relatively large

Method used

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  • A peak-to-average ratio suppression method for underwater acoustic communication based on multi-carrier
  • A peak-to-average ratio suppression method for underwater acoustic communication based on multi-carrier
  • A peak-to-average ratio suppression method for underwater acoustic communication based on multi-carrier

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Embodiment Construction

[0032] Attached below figure 1 , a specific embodiment of the present invention will be described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0033] Put the preprocessed data into the database.

[0034] Then use the existing sequence to construct the required sequence, and use the constructed sequence set to transmit the data to be transmitted. Since the sequence set has a low peak-to-average ratio at the time of construction, the peak suppression can be achieved during the transmission process. The effect of the average ratio, and because the number of optional sequence sets in the codebook is very considerable, it has a certain application value.

[0035] Specifically include:

[0036] Step 1: Obtain the multi-carrier underwater acoustic communication data to be transmitted;

[0037] Step 2: Set the data length to 2 m The data processing is transformed into a generalized Boolean fu...

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Abstract

The invention relates to the technical field of communication, and discloses an underwater acoustic communication peak-to-average ratio suppression method based on multiple carriers, which comprises the following steps: acquiring underwater acoustic communication data of multiple carriers to be transmitted; constructing a sequence set of underwater acoustic communication data for transmitting multiple carriers; determining a variable m of a generalized Boolean function through a sequence A with the length of 2m; for the generalized Boolean function of each variable m, obtaining a function meeting conditions through calculation, and obtaining a plurality of QPSK sequences with the length of 2m; mapping the plurality of QPSK sequences with the length of 2m from quadrature phase shift keying(QPSK) to quadrature amplitude modulation (4q-QAM) to obtain a sequence B with the length of 2m; constructing a sequence set through a plurality of sequences B with the length of 2m; and transmittingthe underwater acoustic communication data of the multiple carriers by using the sequence set. According to the underwater acoustic communication peak-to-average power ratio suppression method based on multiple carriers, extra distortion cannot be caused to signals, the complexity of an OFDM system cannot be increased, and the construction cost of the system can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a multi-carrier-based peak-to-average ratio suppression method for underwater acoustic communication. Background technique [0002] Underwater acoustic communication has always been a communication direction worthy of research. With the rapid development of communication technology today, the underwater acoustic communication industry has already developed from the early analog modulation with low power utilization to today's digital modulation. The great success of multi-carrier wireless communication technology such as Orthogonal Frequency Division Multiplexing) system is coming soon in the 5G era. Today, the OFDM system has many advantages that single-carrier communication technology does not have, and with multi-carrier technology in radio The successful application in the field has led many researchers to study the transfer of the application of this multi-carrier comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B13/02H04L27/26
CPCH04B13/02H04L27/2614
Inventor 王子龙李蒙
Owner XIDIAN UNIV
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