MIMO Signal Reception Using Reference RE Channel Estimation
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Solution Overview
Problem
Existing wireless communication systems using MIMO technology face challenges in efficiently receiving signals due to high computational complexity and interference from adjacent cells, which affect channel estimation and reception performance.
Innovation Solution
The method involves selecting reference resource elements (REs) based on time and frequency intervals for channel estimation, obtaining first and second weights, and using these weights to extract information from the signal, thereby reducing computational complexity and improving reception performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If channel estimation is performed using all resource elements, then reception accuracy is improved, but computational complexity increases
Solution Approach 1:
The patent segments the resource elements into two distinct groups: reference REs used for channel estimation and other REs used for data transmission. By separating these functions, the system performs channel estimation only on the reference REs rather than all REs, reducing computational complexity while maintaining reception accuracy through the use of appropriately placed reference signals.
Solution Approach 2:
The patent applies partial action by performing channel estimation only on a subset of resource elements (reference REs) rather than all REs. This partial channel estimation approach is sufficient for achieving accurate signal reception while significantly reducing the computational burden compared to estimating channels for all REs.
2Productivity
If multiple resource elements are used for signal transmission, then channel capacity is improved, but interference from adjacent cells increases
Solution Approach 1:
The patent introduces reference REs as intermediary elements that facilitate channel estimation and signal reception. These reference REs act as mediators between the transmitted signal and the received signal, enabling the system to compensate for interference from adjacent cells through accurate channel characterization, thereby maintaining channel capacity while reducing harmful interference effects.
Data Source
AI summary
A method performed by an electronic device is provided. The method includes obtaining a signal on a plurality of resource elements (REs), selecting, based on a time interval between symbols, reference REs from the plurality of REs, and a frequency interval between the symbols, performing, based on the reference REs, channel estimation, obtaining, based on a result of the channel estimation, a plurality of first weights corresponding to the reference REs, obtaining, based on the plurality of first weights, a plurality of second weights corresponding to other REs distinct from the reference REs from among the plurality of REs, and obtaining, based on the plurality of first weights and the plurality of second weights, information corresponding to the signal.