Feedback method and device for channel quantization information
A channel quantization and channel correlation technology, applied in the field of channel quantization information feedback method and device, can solve the problems of waste, low quantization efficiency, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0059] In order to make the codebook C b It can also quantize the channel well when there is no channel correlation matrix R rotation, ensuring better mode compatibility, and when there is a channel correlation matrix R to the codebook C b The rotated codeword can still ensure a good structure for dual-polarization channels during rotation, and the codebook C b Part or all of the codewords in can have the following structure: (when Rank1), where u 1 is a 4-dimensional vector, a and b are constants. Preferably, u 1 The elements in are elements in the 16PSK alphabet set or 0, a, b are elements in the 16PSK alphabet set or 0. Preferably, u 1 is any column vector in the codeword matrix in the Rank4 codebook in the LTE system. Preferably, u 1 is a codeword in the Rank1 codebook in the LTE system. The codebook C that meets the requirements of this preferred embodiment can be constructed by using the codewords in the existing codebook b .
[0060] Preferably, the above cod...
Embodiment 2
[0073] The UE obtains the current channel matrix H and the long-term statistical channel correlation matrix R according to the pilot.
[0074] The UE side and the base station side define a same codebook C b . The codebook C b Can be:
[0075] A codebook consisting of 16 vectors.
[0076] Can also be:
[0077] composed of a codebook.
[0078] Can also be:
[0079] composed of a codebook.
[0080] The UE feeds back the R information in a long period, so that both the transmitting and receiving ends know the R information together, or the base station obtains the long-term statistical R information according to the reciprocity of the uplink and downlink channels.
[0081] The UE and the base station agree to use the adaptive codebook technology and the channel correlation matrix R for the codebook C b Do the processing to get the adaptive codebook C B .
[0082] For the current channel matr...
Embodiment 3
[0084] The UE obtains the current channel matrix H and the long-term statistical channel correlation matrix R according to the pilot.
[0085] UE and base station define the same codebook C b . The codebook C b Can be:
[0086] A codebook composed of 16 vectors;
[0087] Can also be:
[0088] A codebook composed of;
[0089] Can also be:
[0090] A codebook composed of;
[0091] Can also be:
[0092] composed of a codebook.
[0093] The UE feeds back the R information in a long period, so that the transmitting and receiving ends jointly guide the R information, or the base station obtains the long-term statistical R information according to the reciprocity of the uplink and downlink channels.
[0094] The UE and the base station agree to use the existing adaptive codebook technology to use the channel correlation matrix to pair the codebook C b Do the processing to get the adaptive ...
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