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BEM channel estimation method based on Wiener filtering

A channel estimation and Wiener filtering technology, applied in baseband systems, baseband system components, transmission monitoring, etc., can solve the channel estimation problem that cannot well solve fast time-varying channels, low estimation accuracy, long response time, etc. question

Inactive Publication Date: 2018-11-06
CHONGQING UNIV
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Problems solved by technology

[0007] In summary, for the traditional channel estimation methods, they cannot solve the channel estimation problem for fast time-varying channels well in the high-speed mobile environment, and their calculation methods have high complexity, low estimation accuracy, long response time, etc. problem, which urgently requires those skilled in the art to solve corresponding technical problems

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  • BEM channel estimation method based on Wiener filtering
  • BEM channel estimation method based on Wiener filtering
  • BEM channel estimation method based on Wiener filtering

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[0074] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0075] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...

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Abstract

The invention provides a BEM channel estimation method based on Wiener filtering. The BEM channel estimation method based on Wiener filtering is characterized in that instead of being directly estimated, channel responses are indirectly acquired through estimation of a channel base vector coefficient; and a system transmission model is established according to a BEM channel model, and a Wiener filter is constructed to estimate the channel base vector coefficient. The method provided by the invention has the advantages that through the BEM channel estimation based on Wiener filtering, BEM can be effectively utilized to represent channel impulse responses, and the base vector coefficient can be estimated through the Wiener filter, so that the complexity of a channel estimator can be reduced,and the channel estimation precision can be improved.

Description

Technical field: [0001] The invention relates to the field of wireless communication, and is aimed at a mobile communication system under a high-speed mobile environment, and is a channel estimation method based on BEM and a Wiener filter. Background technique: [0002] With the rapid development of high-speed trains around the world, the demand for mobile communication in the high-speed mobile environment has increased dramatically. The mobile communication system applied in the high-speed mobile environment has become a research hotspot, and the channel estimation method suitable for the high-speed mobile environment is also became an urgent need. [0003] Channel estimation methods can be divided into three types: blind estimation, semi-blind estimation, and pilot-aided estimation according to whether pilot patterns are used. Typical channel estimation algorithms are based on the Least Squares (LS) criterion, the Linear Minimum Mean Square Error (LMMSE) criterion, and th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04L25/02
CPCH04B17/391H04L25/0224H04L25/0242
Inventor 廖勇沈轩帆王传奇韦王宇陈逸仙
Owner CHONGQING UNIV
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