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Method and device for generating single-carrier frequency domain equalization unique word sequence

A unique word sequence, single-carrier frequency domain technology, applied in the field of wireless communication, can solve the problems of excessive fluctuation of UW frequency domain amplitude characteristics, channel characteristic estimation errors, and high requirements for transmitter linearity

Active Publication Date: 2021-02-19
SHENZHEN HUAQIAN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

OFDM technology has excellent anti-multipath ability, but also has some disadvantages: the peak-to-average ratio of the signal is too high, the linearity requirement of the transmitter is high, and it is sensitive to frequency offset
[0010] If the time length of UW is N, the ratio of the energy between the peak of its spurious correlation component and the main peak is about 20*log10(3 / N), and these spurious correlation components will cause channel characteristic estimation errors. The frequency domain of UW The fluctuation of the amplitude characteristic is too large, and the influence of noise is serious in places with low amplitude characteristics

Method used

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  • Method and device for generating single-carrier frequency domain equalization unique word sequence
  • Method and device for generating single-carrier frequency domain equalization unique word sequence
  • Method and device for generating single-carrier frequency domain equalization unique word sequence

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0038] The flow charts shown in the drawings are just illustrations, and do not necessarily include all contents and operations / steps, nor must they be performed in the order described. For example, some operations / steps can be decomposed, combined or partly combined, so the actual order of execution may be changed according to the actual situation.

[0039] Some implementations of the present application will be described in detail below in conjunction with the ac...

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Abstract

The invention relates to a method and device for generating a single-carrier frequency domain equalization unique word sequence. The method comprises the following steps: exporting a PN sequence generated by a shift register; and adding a direct current component D to the PN sequence to generate a unique word sequence UW. The unique word sequence UW generated by the method provided by the invention has ideal cyclic autocorrelation function characteristics, that is, the autocorrelation values of other positions except the peak value of the autocorrelation function are 0, and the PN sequence subjected to direct current correction is used as the UW of SC_FDE, so that accurate channel transmission characteristics can be obtained through measurement, channel characteristic correction is performed on received signals, and the receiving performance is improved.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a method and device for generating a single-carrier frequency-domain equalized unique word sequence. Background technique [0002] Single-carrier frequency-domain equalization techniques are used in wireless communications. Multipath interference and channel fluctuation are problems that must be dealt with in wireless communication, especially in the environment of broadband, mobile communication and UAV communication. OFDM technology has excellent anti-multipath ability, but it also has some disadvantages: the peak-to-average ratio of the signal is too high, the linearity requirement of the transmitter is high, and it is sensitive to frequency offset. Compared with OFDM technology, single-carrier frequency domain equalization (SC-FDE) has similar anti-multipath interference ability as OFDM, but the signal peak-to-average ratio is low, which can grea...

Claims

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Application Information

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IPC IPC(8): H04L25/03
CPCH04L25/03006Y02D30/70
Inventor 贾学卿
Owner SHENZHEN HUAQIAN TECH CO LTD
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