Method and device for jointly estimating interference signal physical parameters

A technology of interfering signals and physical parameters, which is applied to the shaping network and baseband system components in the transmitter/receiver. problem, to achieve the effect of optimizing overall performance and applying real-time processing

Inactive Publication Date: 2014-01-15
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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Problems solved by technology

[0005] However, the traditional generalized correlation method either assumes that the remaining parameters are known parameters before estimating, or does not consider one or several of them, and can only estimate one parameter value at a time
Such an assumption is not only unrealistic, but also does not take into account the interaction between the physical parameters to be estimated
The physical parameters estimated by this method are not only inaccurate, but also inconvenient for real-time processing.

Method used

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  • Method and device for jointly estimating interference signal physical parameters
  • Method and device for jointly estimating interference signal physical parameters

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Embodiment Construction

[0033] The method and device for jointly estimating physical parameters of an interference signal in a preferred embodiment of the present invention are applied to a wireless communication system, and are used for jointly estimating various physical parameters of the interference signal.

[0034] First, various symbols, functions, formulas, etc. used in the present invention are defined and described.

[0035] for any plural , represent the real part of represent the imaginary part of is the imaginary unit of complex numbers. representative take the conjugate of . representative pair Carry out the modulo operation, that is, .

[0036] any plural are related to a point in the complex plane with the origin as a starting point, One-to-one correspondence for the vectors of the end points. The argument of a complex number starts from the positive semi-axis of the x-axis, and the vector The ray at which the origin is , the end point is ) is the an...

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Abstract

The invention discloses a method for jointly estimating interference signal physical parameters. The method includes the following steps: receiving a composite signal, sampling the composite signal to obtain a discrete observation signal sample which comprises an interference signal and a useful signal, carrying out time delay compensation on a local signal with information same as information carried by the interference signal, estimating the frequency deviation of the interference signal, carrying out frequency compensation on the local signal after the time delay compensation according to the estimated frequency deviation, estimating the phase shift of the interference signal according to the local signal after the time delay compensation and the frequency compensation and the discrete observation signal sample, carrying out phase compensation on the local signal after the time delay compensation and the frequency compensation according to the estimated phase shift, and estimating the amplitude of the interference signal according to the local signal after the time delay compensation, the frequency compensation and the phase compensation and the discrete observation signal sample. The invention further relates to a device for jointly estimating the interference signal physical parameters.

Description

technical field [0001] The invention relates to an interference elimination technology after two-way signals are aliased in a communication system, in particular to a method and a device for jointly estimating physical parameters of an interference signal. Background technique [0002] In some application scenarios of wireless communication, due to the limitation of distance or geographical environment, two sites cannot communicate directly, and relay stations must be used to forward and amplify signals. In order to improve the spectrum utilization rate and the anti-interception level of information, it is usually required that the signals transmitted by two stations communicating with each other completely overlap in time domain, frequency domain and even code space. [0003] During communication, the two sites send uplink signals of the same frequency to the relay station at the same time, superimposed on the relay, and after the down-conversion and power amplification of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L25/03
Inventor 周智勋陈翔田华胥小武徐迪宇
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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