MIMO Transmitter with MRC Circuit for OAM Multiplexing
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Solution Overview
Problem
Current communication systems face challenges in increasing bandwidth to support growing data demands, as traditional methods have reached limitations in speed and channel expansion, necessitating innovative approaches to enhance spectral efficiency and data capacity.
Innovation Solution
The integration of maximum ratio combining (MRC) circuits with MIMO transmitters and orbital angular momentum (OAM) multiplexing, utilizing pilot signals to improve signal processing and channel matrix creation, enables efficient data transmission over multiple channels, allowing for higher spectral efficiency and data capacity through quantum level overlay modulation and spatial multiplexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods of increasing bandwidth are used (increasing number of channels or increasing transmission speed), then bandwidth capacity is improved, but the system reaches limitations and cannot achieve drastic additional speed increases
Solution Approach 1:
The patent applies mode-division multiplexing to transmit multiple data streams simultaneously over a single channel by utilizing different spatial modes (eigenmodes) of the channel. This transforms the problem from increasing channel count or transmission speed to utilizing the spatial dimension, enabling multiple independent data streams through a single physical channel without proportionally increasing system complexity
Solution Approach 2:
The patent segments the data transmission by dividing the data stream into multiple independent data streams that are transmitted simultaneously over different spatial modes. Each data stream occupies a distinct spatial eigenmode, allowing parallel transmission without interference, thereby increasing total bandwidth capacity while maintaining manageable system complexity through structured mode allocation
2Productivity
If the number of channels is increased to support greater data load, then bandwidth is improved, but the number of channels has not increased sufficiently to completely support increasing demands
Solution Approach 1:
The patent makes the single physical channel universal by enabling it to carry multiple data streams simultaneously through mode-division multiplexing. The channel is transformed from a single-function carrier to a multi-functional medium that can transmit multiple independent data streams through different spatial modes, significantly increasing its effective capacity without adding physical channels
Solution Approach 2:
The patent utilizes the spatial dimension (eigenmodes) to multiply the channel capacity. Instead of adding more physical channels horizontally, the system vertically stacks multiple data streams across different spatial modes, effectively utilizing the dimensionality of the propagation channel to achieve high data transmission capacity
3Productivity
If transmission speed is increased to provide greater throughput, then bandwidth is improved, but drastic additional speed increases are not possible
Solution Approach 1:
The patent segments the transmission task by dividing the total data stream into multiple independent data streams that are transmitted simultaneously at lower individual speeds over different spatial modes. This segmentation allows the system to achieve high total throughput without requiring any single transmission path to operate at extremely high speeds, thereby avoiding the limitations of single-channel speed increases
Data Source
AI summary
A communications system includes a maximum ratio combining (MRC) circuit for receiving a plurality of data streams and processing the plurality of input data streams using maximum ration combining to improve signal to noise ratio. A MIMO transmitter transmits the MRC processed plurality of data streams over a plurality of separate communications links from the MIMO transmitter. Each of the plurality of separate communications links from one transmitting antenna of a plurality of transmitting antennas to each of a plurality of receiving antennas at a MIMO receiver. The MIMO transmitter transmits the MRC processed plurality of data streams using a channel matrix of an impulse response of a channel. The channel matrix is created using a pilot signal transmitted on a pilot channel.