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Direct current offset estimation method, device and equipment based on UWB system and storage medium

A technology of DC offset and equipment, applied in baseband system, DC level restoration device/bias distortion correction, baseband system components, etc., can solve the problems of reducing the performance of IR-UWB system and reducing the accuracy of effective information, etc.

Active Publication Date: 2021-02-02
杭州优智联科技有限公司
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Problems solved by technology

[0003] The phenomenon of DC offset (DC Offset) is a common non-ideal phenomenon in communication systems. Due to the existence of DC offset, the signal received by the receiving end passes through the analog-to-digital converter (ADC, Analog-to-DigitalConverter) There will be an offset value between the actual information output and the expected ideal information; combined with the aforementioned IR-UWB system, most of the received signals at the receiving end are pure noise, so when all received signals are offset by a fixed value When , the cumulative offset of the noise will be greater than the offset of the pulse Pulse, which reduces the accuracy of the receiving end to obtain effective information from the received signal and reduces the performance of the IR-UWB system

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  • Direct current offset estimation method, device and equipment based on UWB system and storage medium
  • Direct current offset estimation method, device and equipment based on UWB system and storage medium
  • Direct current offset estimation method, device and equipment based on UWB system and storage medium

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0039] see Figure 4 , which shows a schematic diagram of a network environment 100 applicable to the technical solutions described in the embodiments of the present invention, as an illustrative example but not a limitation, taking a wireless communication device 102 as an example, the wireless communication device 102 can communicate with the network environment 100 Other wireless communication devices in the short range of the wireless communication device 102 perform wireless communication, such as a printer 104, a personal digital assistant (PDA, Personal Digital Assistant) 106, a camera 108, and an access point 110; The access point 110 is in wireless communication with a speaker system 112 and a wireless network 114 communicatively coupled to the access point 110 . All...

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Abstract

The embodiment of the invention discloses a direct current offset estimation method, device and equipment based on a UWB system and a storage medium. The method comprises the following steps: sequentially selecting a judgment sub-domain and an estimation sub-domain in a pilot frequency domain of a receiving frame; obtaining a noise position according to the correlation values of the elements at the corresponding positions in all pilot symbols in the judgment sub-domain; accumulating the correlation values corresponding to the noise position elements in the estimation sub-domain to obtain an accumulated sum value; and obtaining a direct current offset estimation value according to the accumulated sum value and the pilot frequency sequence.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wireless communication, and in particular to a DC offset estimation method, device, device, and storage medium based on an ultra-wideband (UWB, UltraWide Band) system. Background technique [0002] At present, the Impulse Radio Ultra Wide-Band (IR-UWB, Impulse Radio Ultra Wide-Band) technology defined in the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.15.4 protocol standard is widely used in applications such as data transmission and positioning. Scenes. The frame structure used when interacting with the IR-UWB system is as follows: figure 1 As shown, it may include a pilot field, a Start of Frame Delimiter (SFD, Start of Frame Delimiter) field and a data field. It should be pointed out that in the frame structure adopted by the IR-UWB system, effective information such as the pilot sequence in the pilot domain and...

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Application Information

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IPC IPC(8): H04L25/02H04L25/06
CPCH04L25/0224H04L25/061
Inventor 吴极董宗宇秦波
Owner 杭州优智联科技有限公司