Quantum Signal Detection in MIMO Systems
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Solution Overview
Problem
Existing methods for extracting digital information from quantum algorithms in MIMO systems are limited by their inability to extract both magnitude and phase information without increasing calculation complexity, and they often require additional processing steps, which restricts their application and accuracy.
Innovation Solution
A method and apparatus that modify the MIMO channel matrix and reception vector according to identified modulation schemes, perform quantum calculations, and extract digital information without additional processing, enabling error-free extraction of both magnitude and phase information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If quantum algorithms are used to extract digital information from MIMO systems, then calculation speed is improved, but the ability to extract both magnitude and phase information without additional processing is limited
Solution Approach 1:
The patent applies preliminary action by modifying the MIMO channel matrix and reception vector before quantum calculation based on the identified modulation scheme. This preprocessing step encodes the necessary information structure into the quantum state, enabling direct extraction of both magnitude and phase information without requiring additional processing steps after quantum computation.
Solution Approach 2:
The patent employs parameter changes by adapting the equation modification scheme according to different modulation schemes (BPSK, QPSK, MPSK, QAM). By changing the mathematical parameters and structure of the channel matrix and reception vector based on the specific modulation type, the system optimizes the quantum calculation to directly yield both magnitude and phase information appropriate for each modulation scheme.
2Measurement precision
If additional processing steps are added to extract digital information, then information extraction accuracy is improved, but calculation complexity increases
Solution Approach 1:
The patent eliminates the need for additional processing steps by performing preliminary modification of the MIMO channel matrix and reception vector according to the modulation scheme. This upfront preparation ensures that the quantum algorithm directly produces the complete digital information including both magnitude and phase, achieving high extraction accuracy without increasing processing complexity.
3Measurement precision
If quantum calculation is applied to MIMO channel matrix and reception vector, then signal detection accuracy is improved, but calculation complexity increases
Solution Approach 1:
The patent reduces quantum calculation complexity by changing the parameters and structure of the input data based on the modulation scheme. By modifying the MIMO channel matrix and reception vector to match the specific modulation type (BPSK, QPSK, MPSK, or QAM), the quantum algorithm can directly extract both magnitude and phase information in a single operation, improving signal detection accuracy without proportionally increasing calculation complexity.
Data Source
AI summary
A method of detecting a signal in a wireless communication system supporting multiple-input multiple-output (MIMO) is provided. The method includes obtaining a MIMO channel matrix between a transmission end and a reception end and a reception vector received by the reception end, identifying a modulation scheme of the transmission end, applying a preset equation modification scheme to the MIMO channel matrix and the reception vector according to the identified modulation scheme, and detecting a transmission vector of the transmission end by performing quantum calculation on the modified MIMO channel matrix and the modified reception vector.