Method and apparatus for acquiring carrier jamming noise ratio
Method and apparatus for acquiring carrier jamming noise ratio
 CN 101,304,400 A
 Filed: 05/28/2008
 Published: 11/12/2008
 Est. Priority Date: 05/28/2008
 Status: Active Application
First Claim
1. , a kind of acquisition methods of carrierininterference noise ratio is characterized in that, comprising:
 Obtain the noise powervalue and the intercarrier interference performance number of OFDM symbol;
Obtain the interference noise power value of OFDM symbol according to described noise powervalue and intercarrier interference performance number;
Obtain the available signal power value of OFDM symbol;
According to the interference noise power value and the available signal power value of described OFDM symbol, obtain the carrierininterference noise ratio.
Chinese PRB Reexamination
Abstract
The embodiment of the invention discloses a method and a device for obtaining carrier interference noise ratio. The method includes the following steps: obtaining the noise power values and intercarrier interference power values of OFDM signs; obtaining the interference noise power values of the OFDM signs according to the noise power values and intercarrier interference power values; obtaining the power values of available signals of the OFDM signs; obtaining the carrier interference noise ratio according to the interference noise power values of the OFDM signs and the power values of the available signals. The embodiment of the invention can accurately obtain the carrier interference noise ratio when the relative moving speed between a terminal and a base station are higher.

2 Citations
Signaltointerference ratio decision method in actual ICI (InterCarrier Interference) elimination of highmobility OFDM (Orthogonal Frequency Division Multiplexing) cooperative system  
Patent #
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Current Assignee

Estimating quality of a signal in mobile wireless communication systems  
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Current Assignee

No References
10 Claims

1. , a kind of acquisition methods of carrierininterference noise ratio is characterized in that, comprising:

Obtain the noise powervalue and the intercarrier interference performance number of OFDM symbol; Obtain the interference noise power value of OFDM symbol according to described noise powervalue and intercarrier interference performance number; Obtain the available signal power value of OFDM symbol; According to the interference noise power value and the available signal power value of described OFDM symbol, obtain the carrierininterference noise ratio.


2. the acquisition methods of carrierininterference noise ratio according to claim 1 is characterized in that the noise powervalue of the described OFDM of obtaining symbol comprises:
Obtain the noise powervalue of OFDM symbol according to the subcarrier of the boundary belt of described OFDM symbol.

3. the acquisition methods of carrierininterference noise ratio according to claim 1 is characterized in that the described intercarrier interference performance number of obtaining comprises:

Obtain the channel estimation value of the Dan Jing of described OFDM symbol; Channel estimation value according to the Dan Jing of described OFDM symbol obtains the domain channel response value; Obtain the intercarrier interference performance number of described OFDM symbol according to described domain channel response value.


4. the acquisition methods of carrierininterference noise ratio according to claim 1 is characterized in that, the described interference noise power value of obtaining the OFDM symbol according to described noise powervalue and intercarrier interference performance number comprises:
With described noise powervalue and the summation of intercarrier interference performance number, obtain the interference noise power value of described OFDM symbol.

5. as the acquisition methods of carrierininterference noise ratio as described in claim 1 or 3, it is characterized in that the available signal power value of the described OFDM of obtaining symbol comprises:

Utilize the total received power value of described OFDM symbol to deduct the interference noise power value of described OFDM symbol, obtain the available signal power value of described OFDM symbol;
OrUtilize the channel estimation value of the Dan Jing of described OFDM symbol, obtain the available signal power value of described OFDM symbol.


6. , a kind of equipment that obtains of carrierininterference noise ratio is characterized in that, comprising:

The noise power acquiring unit is used to obtain the noise powervalue of OFDM symbol; Intercarrier interference power acquiring unit is used to obtain the intercarrier interference performance number of OFDM symbol; The interference noise power acquiring unit is used for the intercarrier interference performance number that the noise powervalue obtained according to described noise power acquiring unit and described intercarrier interference power acquiring unit obtain, and obtains the interference noise power value of OFDM symbol; The available signal power acquiring unit is used to obtain the available signal power value of OFDM symbol; Carrierininterference noise ratio acquiring unit is used for the interference noise power value of the OFDM symbol that obtains according to described interference noise power acquiring unit and the available signal power value that described available signal power acquiring unit obtains, and obtains the carrierininterference noise ratio.


7. as the equipment that obtains of carrierininterference noise ratio as described in the claim 6;
 it is characterized in that;
described noise power acquiring unit comprises;
first noise power is obtained subelement, obtains the noise powervalue of OFDM symbol according to the subcarrier of the boundary belt of described OFDM symbol.
 it is characterized in that;

8. as the equipment that obtains of carrierininterference noise ratio as described in the claim 6, it is characterized in that described intercarrier interference power acquiring unit comprises:

Single footpath channel estimating is obtained subelement, is used to obtain the channel estimation value of the Dan Jing of described OFDM symbol; Domain channel response is obtained subelement, and the channel estimation value that is used for obtaining according to described single footpath channel estimating the Dan Jing of the OFDM symbol that subelement obtains obtains the domain channel response value; Intercarrier interference power obtains subelement, is used for obtaining the domain channel response value that subelement obtains according to described domain channel response, obtains the intercarrier interference performance number of described OFDM symbol.


9. as the equipment that obtains of carrierininterference noise ratio as described in the claim 6, it is characterized in that, described interference noise power acquiring unit comprises:
 first interference noise power obtains subelement, be used for the intercarrier interference performance number that noise powervalue that described noise power acquiring unit is obtained and described intercarrier interference power acquiring unit obtain and sue for peace, obtain the interference noise power value of described OFDM symbol.

10. as the acquisition methods of carrierininterference noise ratio as described in claim 6 or 8, it is characterized in that described available signal power acquiring unit comprises:

First available signal power is obtained subelement, is used to utilize the total received power value of described OFDM symbol to deduct the interference noise power value of the OFDM symbol that described interference noise power acquiring unit obtains, and obtains the available signal power value of described OFDM symbol;
OrSecond available signal power is obtained subelement, is used to utilize described single footpath channel estimating to obtain the channel estimation value of the Dan Jing of the OFDM symbol that subelement obtains, obtains the available signal power value of described OFDM symbol.

Specification(s)