Interference cancellation using non-linear filtering
US-10069712-B2 · Sep 4, 2018 · US
Method for removing spatial and temporal multi-path interference for a receiver of frequency-modulated radio signals
US10608684B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10608684-B2 |
| Application number | US-201816490638-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 31, 2018 |
| Priority date | Jun 1, 2017 |
| Publication date | Mar 31, 2020 |
| Grant date | Mar 31, 2020 |
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Abstract
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A method for decreasing multi-path interference, for a vehicle radio receiver including at least two radio reception antennas that each receive a plurality of radio signals composed of time-shifted radio signals resulting from a multi-path effect. The plurality of radio signals combined to deliver a combined radio signal ys to be played, with: yn=WnT[G1,nS, X1,n+G2,nS, X2,n] at time n, where x1 and x2 are vectors the components of which correspond to the plurality of signals received by the first antenna and by the second antenna, respectively, G1,nS and G2,nS are scalars the components of which are the complex weights of a spatial filter and wnT is the transpose matrix of a vector the components of which are the complex weights of a temporal filter. The method includes implementation of an iterative adaptation algorithm to determine the complex weights of the spatial filter and the complex weights of the temporal filter.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for decreasing multi-path interference, for implementation thereof in a vehicle radio receiver, said radio receiver being intended to receive an emitted radio signal and comprising at least two radio reception antennas that each receive a plurality of radio signals corresponding to said emitted radio signal, each of said plurality of signals received by each of said antennas being composed of time-shifted radio signals resulting from a multi-path effect, said plurality of radio signals being combined to deliver a combined radio signal y n to be played, with y n ==W n T [ G 1,n S , X 1,n + G 2,n S , X 2,n ] at the time n, where X 1 is a vector the components of which correspond to a plurality of signals received by a first antenna, expressed in complex baseband, X 2 is a vector the components of which correspond to the plurality of signals received by a second antenna, expressed in complex baseband, G 1,n S and G 2,n S are scalars the components of which are the complex weights of a spatial filter and W n T is the transpose matrix of a vector the components of which are the complex weights of a temporal filter, said method comprising: the implementation of an iterative adaption algorithm to determine said complex weights of the spatial filter and said complex weights of the temporal filter, wherein the respective variations in the components of the matrix the components of which form the complex weights of the temporal filter and in the components of the scalars the components of which form the complex weights of a spatial filter are written: W n + 1 t = W n t - μ W y n - R y n y n _ ( G 1 , n s _ X 1 , n + G 2 , n s _ X 2 , n ) G 1 , n + 1 s = G 1 , n s - μ G 1 y n - R y n y n _ ( W n t
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the mobile station comprising multiple antennas, e.g. to provide uplink diversity · CPC title
per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch (rake receivers as such H04B1/7115) · CPC title
using blind adaptation · CPC title
with a recursive structure (H04L25/03031 takes precedence) · CPC title
Weighted combining · CPC title
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- What does patent US10608684B2 cover?
- A method for decreasing multi-path interference, for a vehicle radio receiver including at least two radio reception antennas that each receive a plurality of radio signals composed of time-shifted radio signals resulting from a multi-path effect. The plurality of radio signals combined to deliver a combined radio signal ys to be played, with: yn=WnT[G1,nS, X1,n+G2,nS, X2,n] at time n, where x1…
- Who is the assignee on this patent?
- Continental Automotive France, Continental Automotive Gmbh, Continenta Automotive France
- What technology area does this patent fall under?
- Primary CPC classification H04B7/0848. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).