Real-Time Radio Channel Simulation with Interfering Sources
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Solution Overview
Problem
Current radio channel simulation technologies struggle to perform realistic, real-time simulations due to the complex and varying nature of radio channels, especially in mobile systems, which limits the ability to accurately model and test radio connections with multiple antennas or interfering sources.
Innovation Solution
A method and device that simulate a radio connection between a transmitter and a receiver in real-time by storing and adding simulation results from interfering signal sources to the memory, allowing for an almost limitless increase in the number of channels simulated, restricted only by memory capacity and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of channels to be simulated is increased to model multiple antennas and interfering sources, then the realism and accuracy of the simulation is improved, but the device complexity and hardware requirements increase significantly
Solution Approach 1:
The simulation device is segmented into modular components: a radio channel simulation block for modeling propagation paths, a memory block for storing channel characteristics, and a controller for coordination. This modular segmentation allows the system to handle multiple channels by reusing the same components with different data, reducing overall device complexity while maintaining high simulation accuracy for MIMO and interfering source scenarios
Solution Approach 2:
The system performs preliminary actions by pre-storing radio channel characteristics, impulse responses, and propagation path data in the memory block before the actual simulation runs. This preliminary preparation eliminates the need for complex real-time calculations during simulation, allowing accurate modeling of multiple antennas and interfering sources without proportionally increasing hardware complexity
2Reliability
If real-time simulation is performed with multiple propagation paths and interfering sources, then the realism of the simulation is improved, but the simulation time and computational resources increase
Solution Approach 1:
The system pre-calculates and stores radio channel characteristics, impulse responses, and propagation path parameters in the memory block before the simulation executes. This preliminary action transforms the simulation from computationally intensive real-time calculations to faster data retrieval and processing, enabling realistic multi-path and interfering source simulations without proportionally increasing simulation time
Solution Approach 2:
The system creates copies of channel characteristics and propagation path data from pre-stored memory data during the simulation process. Instead of recalculating these parameters in real-time, the system retrieves and processes pre-computed copies, significantly reducing computational load and simulation time while maintaining the realism of multi-antenna and interfering source scenarios
Data Source
AI summary
A method and a device are provided for performing channel simulation. The device includes a radio channel simulation block and a memory and it is configured to simulate a radio connection between a transmitter and a receiver in real time. The device is further configured to simulate a radio connection between at least one interfering signal source and the receiver in real time, and to store the simulation result in the memory, and to read the stored simulation results in real time from the memory and add the results read to the simulation during simulation of the radio connection between the transmitter and the receiver.