Spatial Diversity in Co-Axial Multi-Circle OAM Multiplexing
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing interference between different OAM modes in co-axial multi-circle orbital angular momentum multiplexing, leading to reduced throughput and signal reliability due to mutual interference between antennas.
Innovation Solution
Implement spatial diversity transmission schemes by transmitting data streams using a configured set of transmitter circles, where the transmitter indicates available circles and the receiver provides feedback on preferred circles, reducing interference through coordinated use of multiple co-axial transmitter circles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If co-axial multi-circle OAM multiplexing is implemented to increase data transmission capacity, then throughput is improved, but mutual interference between antennas increases
Solution Approach 1:
The patent segments the OAM multiplexing system into multiple co-axial transmitter circles, where each circle operates with specific OAM modes. By dividing the transmission into separate circular paths with controlled mode assignments, the system maintains high throughput while reducing mutual interference through spatial separation of signal paths.
Solution Approach 2:
The patent introduces spatial diversity by utilizing multiple co-axial circles in the radial dimension, rather than relying solely on angular separation. This dimensional expansion allows simultaneous transmission of multiple OAM modes with reduced interference, as each circle provides an additional spatial degree of freedom for signal isolation.
2Reliability
If spatial diversity transmission schemes are implemented using multiple transmitter circles, then signal reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the set of available transmitter circles and their associated OAM modes before data transmission begins. The transmitter and receiver establish agreed-upon circle-mode mappings in advance, which simplifies real-time processing and reduces operational complexity while maintaining signal reliability through diversity.
Solution Approach 2:
The patent creates a universal framework where the same set of co-axial transmitter circles can support multiple OAM modes and different data streams. This multi-functional approach allows the system to achieve spatial diversity and improved reliability without proportionally increasing hardware complexity, as the circular structures serve multiple communication functions simultaneously.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter of orbital angular momentum (OAM) multiplexing based communication may transmit, to a receiver of the OAM multiplexing based communication, a configuration message that indicates a configured set of transmitter circles. The transmitter may transmit, to the receiver, at least one data stream using the configured set of transmitter circles. Numerous other aspects are provided.