Large-scale multi-input-and-output channel estimation method and device
A channel estimation and multi-input technology, which is applied in the field of mobile communication, can solve the problems of limiting spectrum efficiency and increasing pilot overhead, and achieve the effect of saving channel time-frequency resources
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0022] This embodiment provides a technical solution of a large-scale multiple-input multiple-output channel estimation method. The large-scale MIMO channel estimation method is executed by a large-scale MIMO channel estimation device, and the large-scale MIMO channel estimation device is integrated in a mobile station.
[0023] see figure 1 , the large-scale multiple-input multiple-output channel estimation method includes:
[0024] S11. Receive pilot signals on multiple subcarriers.
[0025] For simplicity of description, it is assumed that a mobile station is equipped with one antenna, and the mobile station receives a pilot signal using this antenna.
[0026] In order to perform accurate channel measurement, a part of subcarriers is selected from subcarriers corresponding to different antennas. When sending pilot signals, the base station sends pilot signals for channel measurement on these subcarriers. The pilot signal is also called a preamble signal, which is a sign...
no. 2 example
[0060] This embodiment provides a technical solution of a large-scale multiple-input multiple-output channel estimation method. In this technical solution, the large-scale multiple-input multiple-output channel estimation method includes: the mobile station uses the OMP algorithm to recover the frequency domain channel information on the subcarrier where the pilot frequency is located; For channel information in the frequency domain, the OMP algorithm is used to restore the channel information of all antennas on all subcarriers.
[0061] see image 3 , the large-scale multiple-input multiple-output channel estimation method is executed cooperatively by the base station and the mobile station. Specifically, the large-scale multiple-input multiple-output channel estimation method includes:
[0062] S31. The base station determines the number of subcarriers occupied by the pilot signal according to the sparsity of the multipath dimension of the channel matrix.
[0063] Specifi...
no. 3 example
[0079] This embodiment provides a technical solution of a large-scale MIMO channel estimation device. see Figure 4 , in this technical solution, the large-scale MIMO channel estimation device includes: a signal receiving module 41 and a matrix restoration module 42 .
[0080] The signal receiving module 41 is used for receiving pilot signals on multiple subcarriers.
[0081] The matrix recovery module 42 is used to restore the channel matrix in the frequency domain of the subcarriers occupied by the pilot by compressing the sparse representation of the channel digital cosine transform DCT domain according to the strong correlation between the antennas, and using the time domain of the channel Sparse feature, recovering the channel matrix of all subcarriers.
[0082] Wherein, the plurality of subcarriers are some subchannels of all subcarriers in the massive multiple-input multiple-output, and the time-domain channel matrix is a sparse matrix.
[0083] Optionally, the tim...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com