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Narrowband interference detection and elimination method and system for wireless broadband system

A narrowband interference and wireless broadband technology, applied in transmission systems, electrical components, etc., can solve problems such as waste of resources, and achieve the effect of detecting and eliminating narrowband interference, improving demodulation performance and link capacity, and simple and fast narrowband interference.

Active Publication Date: 2021-04-30
南京码讯光电技术有限公司
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Problems solved by technology

Since the minimum scheduling unit of a broadband system is a physical resource block, and a narrowband signal usually only interferes with one to three subcarriers of a physical resource block, the non-scheduling method will cause resource waste

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  • Narrowband interference detection and elimination method and system for wireless broadband system
  • Narrowband interference detection and elimination method and system for wireless broadband system
  • Narrowband interference detection and elimination method and system for wireless broadband system

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with accompanying drawing:

[0056] A narrowband interference detection and elimination method and system for a wireless broadband system.

[0057] The technical scheme provided by the invention is:

[0058] A narrowband interference detection and elimination method for a wireless broadband system, the process of the receiving end is as follows Figure 13 As shown, specifically, as figure 1 As shown, the detection method is:

[0059] Through the frequency domain data of each port extracted at the receiving end, extract the complex-valued data of the reference symbol and the complex-valued data of the subcarrier in the OFDM / SC-FDMA symbol of the corresponding port; that is, after the receiver undergoes CP and FFT transformation, Obtain the frequency domain data on the receiving port of the receiving antenna. Here the receiving antenna refers to the port corresponding to the receiving antenna. For e...

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Abstract

A method and system for detecting and eliminating narrowband interference in a wireless broadband system. The present invention relates to the field of communication detection, in particular to a method and system for detecting and eliminating narrowband interference in a wireless broadband system; The detection and elimination method and system, through the detection and elimination of narrowband signals on the wireless broadband receiver side, thereby improving the demodulation performance and link capacity of the wireless broadband system, the method and system provided by the present invention are related to the location and power of narrowband interference It has nothing to do, and does not require the participation of the scheduler and the transmitter, and can detect and eliminate narrowband interference simply and quickly.

Description

technical field [0001] The invention relates to the field of communication detection, in particular to a narrowband interference detection and elimination method and system for a wireless broadband system. Background technique [0002] With the rapid development of multimedia services such as data and video, the wireless broadband system represented by the LTE system has been widely used. In order to meet high-speed data services, wireless broadband systems usually adopt broadband transmission and OFDM / SC-FDMA modulation technology, and carry out targeted protocol design on the physical layer. For an LTE system (or a redesigned wireless broadband system based on LTE), its physical layer design is mainly reflected in the following aspects. [0003] (1) Time-frequency resource division [0004] Regardless of the TDD or FDD system, resources are usually divided in units of 1 ms in the time domain, and each 1 ms is called a subframe (Subframe) or transmission time interval (TT...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10
CPCH04B1/1036H04B2001/1045
Inventor 张声利朱剑华
Owner 南京码讯光电技术有限公司
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