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A noise estimation method and device
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A technology of noise estimation and noise variance estimation, which is applied in the field of noise estimation methods and devices, and can solve the problems of large storage resources and high computational time complexity
Active Publication Date: 2021-04-06
SANECHIPS TECH CO LTD
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Problems solved by technology
However, in the prior art, cumbersome steps are required to determine the position of the RS, and a large amount of storage resources are required, and the calculation time complexity is relatively high.
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Embodiment 1
[0067] see figure 1 , which shows that an embodiment of the present invention provides a noise estimation method, the method may include:
[0068] S101: Acquire the original location information of the RS in the RB to be processed.
[0069] In the frame structure of LTE-A, a resource block (RB, Resource Block) has a bandwidth of 180 KHz, consists of 12 subcarriers with a bandwidth of 15 KHz, and is a time slot of 0.5 ms in the time domain. Seven OFDMs can be transmitted in one time slot of the Normal CP, and six OFDMs can be transmitted in one time slot of the Extended CP.
[0070] The location information of the RS in different RBs is also different, so the original location information of the RS in the RB to be processed must first be obtained.
[0071] S102: Obtain the mapping position information corresponding to the original position information of the RS in the RB to be processed according to the preset mapping template;
[0072] Wherein, the preset mapping template i...
Embodiment 2
[0109] see Figure 8 , which shows that an embodiment of the present invention provides a noise estimation device 8, the noise estimation device includes: an acquisition module 801, a mapping module 802, a generation module 803, and a filtering module 804; wherein,
[0110] The obtaining module 801 is configured to obtain the original position information of the RS in the RB to be processed;
[0111] The mapping module 802 is configured to obtain the mapping position information corresponding to the original position information of the RS in the RB to be processed according to a preset mapping template; wherein, the preset mapping template is used to make different parameters RB The mapped position information corresponding to the original position information of the RS is the same;
[0112] The generation module 803 is configured to generate the RS noise estimation matrix corresponding to the position information of the RS mapping in the RB to be processed according to the p...
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Abstract
The embodiment of the present invention discloses a method for estimating noise, the method comprising: obtaining the original position information of the RS in the RB to be processed; obtaining the mapping position corresponding to the original position information of the RS in the RB to be processed according to a preset mapping template information; wherein, the preset mapping template is used to make the mapping position information corresponding to the original position information of the RS of different parameters RB the same; according to the conjugate of the preset RS noise variance estimationalgorithm and the RS noiseestimation matrix The property generates an RS noise estimation matrix corresponding to the RS-mapped position information in the RB to be processed; and obtains an RS noise estimation result according to the RS noise estimation matrix and a preset filtering algorithm. The embodiment of the invention also discloses a noise estimation device.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a noise estimation method and device. Background technique [0002] Long Term Evolution (LTE-A, Long Term Evolution-Advanced) is the evolution of 4G technology, Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) and Multiple-Input Multiple-Output (MIMO, Multiple-Input Multiple-Output ) technology is its key technology. In the OFDM technology, the estimation of the reference signal (RS, Reference Signal) channel is generally used to determine the variation of the channel in the time domain and the frequency domain. Using MIMO technology to use multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectively, so that signals are transmitted and received through multiple antennas at the transmitting end and receiving end, thereby improving communication quality. [0003] D...
Claims
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