Multi-User MIMO Detection Without Other Users' Modulation Modes
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Solution Overview
Problem
In multi-user MIMO technology, the local user cannot acquire modulation modes of other users, making it difficult to perform Sphere Decoding (SD) detection, and existing methods require complex joint processing between transmitting and receiving terminals.
Innovation Solution
A multi-user MIMO detection method that determines a first detection method based on the modulation mode of the first user equipment, allowing for multi-user joint detection without needing to know the modulation modes of other users, using methods like MMSE or SD-IRC detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Sphere Decoding detection is used to achieve optimal performance, then detection performance is improved, but device complexity increases due to the need for joint processing between transmitting and receiving terminals
Solution Approach 1:
The patent segments the detection process by allowing each user equipment to perform detection independently based on its own modulation mode, rather than requiring joint processing between all users. The first user equipment determines a first detection method based on its modulation mode and performs multi-user joint detection locally, while the second user equipment similarly determines a second detection method based on its modulation mode. This segmentation eliminates the need for complex coordinated processing between transmitting and receiving terminals while maintaining detection performance.
2Ease of operation
If multi-user joint detection is performed without knowing modulation modes of all users, then ease of operation is improved, but detection precision deteriorates
Solution Approach 1:
The patent applies local quality by allowing each user equipment to use its own modulation mode information for detection purposes. The first user equipment uses its known modulation mode to determine the first detection method, and the second user equipment uses its own modulation mode to determine the second detection method. This localized approach enables each user to perform detection independently without needing to know the modulation modes of other users, maintaining both ease of operation and detection precision.
3Reliability
If Block Diagonalization precoding is adopted to eliminate user interference, then detection performance is improved, but device complexity increases due to joint processing requirements
Solution Approach 1:
Instead of the transmitting terminal performing complex Block Diagonalization precoding to eliminate interference, the patent inverts the approach by having the receiving terminal perform detection based on its own modulation mode without requiring such precoding. The first user equipment determines a first detection method based on its modulation mode and performs detection directly, eliminating the need for complex transmitting terminal processing while maintaining detection performance.
Data Source
AI summary
Provided are a multi-user multiple-input multiple-output detection method and apparatus, an electronic device, and a computer-readable storage medium. The method includes: in a case where it is determined that received data includes data for first user equipment and data for at least one second user equipment, determining a first detection method according to a modulation mode of the first user equipment (100); and performing multi-user joint detection on the received data with the first detection method (101).