Inter-wave Interference Elimination Method for Downloading in High-speed Mobile Environment Based on Geographical Location Information
A technology of geographic location information and inter-carrier interference, which is applied to baseband system components, transmitter/receiver shaping networks, etc., can solve problems such as undiscovered and uncollected data, and achieve good real-time performance and stable performance , the effect of low complexity
Inactive Publication Date: 2018-07-03
SHANGHAI JIAOTONG UNIV
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[0047] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0048] According to the method for eliminating inter-wave interference in a high-speed mobile environment based on geographical position information provided by the present invention, it is characterized in that it includes the following steps:
[0049] Step 1: Measure the system parameters in the real scene;
[0050]Step 2: Set up the OFDM communication system according to the system parameters in the real scene, and pre-store the pilot position information;
[0051] Step 3: Establish a channel ...
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The invention provides a geographical location information-based method for removing inter-carrier interference under a high-speed mobile environment. The method comprises the steps as follows: measuring a system parameter in a real scenario; setting an orthogonal frequency division multiplexing OFDM communication system according the system parameter in the real scenario and pre-storing pilot frequency location information; establishing a channel model according to real-time geographical location information; removing the inter-carrier interference ICI according to the channel model corresponding to the real-time geographical location information; performing channel estimation to pilot frequency information after removing the inter-carrier interference ICI, and using the estimated channel information to perform data processing. A brand new method for removing the inter-carrier interference ICI of the invention is designed under a real high-speed mobile scene, and explores characteristic of a high-speed mobile channel between a base station and a receiving end by using the characteristic that the moving track and the real-time speed of the receiving end are known. The method is stable in performance, high in spectrum effectiveness, low in complexity and strong in robustness.
Description
technical field [0001] The present invention relates to a method for eliminating interference in a wireless communication system, in particular to eliminating interference between subcarriers in an OFDM wireless communication system, and more specifically to a high-speed mobile environment based on geographic location information using geographic location information Download the method for inter-wave interference cancellation. Background technique [0002] With the continuous development and wide application of high-speed mobile technology, how to provide people with wireless communication services with high reliability and high data transmission speed in high-speed mobile scenarios is particularly important. The current mainstream solutions are mainly based on Orthogonal Frequency Division Multiplexing (OFDM). However, the severe instantaneous Doppler frequency shift caused by the high-speed movement of the receiving end will destroy the orthogonality between OFDM subcarr...
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IPC IPC(8): H04L25/03H04L25/02
Inventor 任翔陈文
Owner SHANGHAI JIAOTONG UNIV