A CFO Estimation Method Based on Multiple Noises

A technology of noise and channel noise, which is applied in the field of CFO estimation based on multiple noises, and can solve problems such as OFDM performance degradation
CN106101042BActive Publication Date: 2019-05-14东开数科(山东)产业园有限公司
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
东开数科(山东)产业园有限公司
Publication Date
2019-05-14

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This invention discloses a CFO evaluation method based on multiple noises. The method comprises the steps of triggering multiple noises, acquiring a composite signal, evaluating a deflection factor and evaluating a CFO. The CFO evaluation method based on multiple noises can generate different received signals by utilizing multiple noises. The received signals can be composited by utilizing the transpose reversible property of a unitary matrix; the frequency deflection of transmission signals and received signals can be acquired based on the correlation of channels; and on the premise of a certain signal-to-noise ratio, the method has smaller minimum mean square error.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a method for estimating CFO (Carrier Frequency Offset, carrier frequency offset) of an LTE system, in particular to a method for estimating CFO based on multiple noises. Background technique

[0002] LTE is a communication system currently being developed by 3GPP. It adopts OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) multi-channel mode, and each subcarrier overlaps with each other to greatly improve the spectrum efficiency of the system. It is very suitable for high data This is one of the reasons why LTE can greatly improve cell throughput compared with 2 / 3G technology. The problem is that OFDM needs each subcarrier to maintain its orthogonality to perform, and it is very sensitive to synchronization errors, and the ISI (InternSymbol Interference, intersymbol interference) existing in the multipath fading channel of the actual wireless environment will cause the carrier...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More