Signal processing method and device
A signal processing and signal technology, applied in the field of communication, can solve the problem of low utilization rate of spectrum resources
Active Publication Date: 2021-07-02
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0004] However, since one subcarrier and one OFDM symbol in the frequency domain signal are set as a pilot sequence, in order to be able to send a complete data signal, it is necessary to increase the number of subcarriers and OFDM symbols contained in the frequency domain signal, that is, It is necessary to increase the spectrum resources used to transmit data signals, which in turn leads to low utilization of spectrum resources
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art based on the present application belong to the protection scope of the present invention.
[0027] An embodiment of the present invention provides a signal processing system, the signal processing system includes: a first device and a second device, wherein:
[0028] The first device may divide the data bits in the data signal to be transmitted based on the number of multiple preset pilot sequences to obtain the first sub-data signal and the second sub-data signal; based on the data in the first sub-data signal bit, and the corresponding relationshi...
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The embodiment of the invention provides a signal processing method and device, and the method comprises the steps: enabling a first equipment to determine a target insertion position of a pilot frequency sequence in a first frequency domain signal based on data bits in a first sub-data signal obtained by dividing a data signal; combining the pilot frequency sequence and a second sub-data signal obtained by dividing the data signal according to the target insertion position to obtain a first frequency domain signal; and sending a pulse signal corresponding to the first frequency domain signal to a second device; enabling a second device to determine pilot frequency sequences in a first frequency domain signal corresponding to the pulse signal, and determining data bits corresponding to insertion positions of each pilot frequency sequence in the first frequency domain signal to obtain a first sub-data signal; demodulating other sub-carriers except the pilot frequency sequence in the first frequency domain signal to obtain a second sub-data signal; and splicing the first sub-data signal and the second sub-data signal to obtain a corresponding data signal. Based on the processing, the utilization rate of spectrum resources can be improved.
Description
technical field [0001] The present invention relates to the field of communication technologies, in particular to a signal processing method and device. Background technique [0002] A vehicle in the IoV system based on radar communication integration technology (may be called the first vehicle) can generate pulse signals carrying radar signals and data signals and send them to another vehicle (may be called the second vehicle) A pulse signal, when the pulse signal reaches the second vehicle, it will reflect an echo signal to the first vehicle. Further, the first vehicle can determine the distance to the second vehicle and the current speed of the second vehicle relative to the first vehicle according to the echo signal. [0003] In the prior art, a frequency domain signal including a pilot sequence and a data signal can be generated, wherein the pilot sequence is used as a radar signal, and the pilot sequence is a specified subcarrier and a specified OFDM (Orthogonal Frequ...
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IPC IPC(8): H04L27/26H04L5/00
CPCH04L27/2601H04L5/0048H04L27/2675H04L27/2666H04L27/2613
Inventor 冯志勇黄赛赵艺帆张奇勋尉志青
Owner BEIJING UNIV OF POSTS & TELECOMM