Radio Channel Simulation Transforming Antenna Domain to Beam Domain
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Solution Overview
Problem
Current radio channel simulation systems for multi-antenna devices are limited by high hardware resource requirements, affecting accuracy and flexibility, especially in simulating larger antenna systems and multi-user cases.
Innovation Solution
The system transforms the channel model from the antenna domain to the beam domain using a transformation algorithm and beam forming weights, allowing for more efficient processing of beam-specific transmit signals, reducing resource requirements and enabling realistic interference simulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If channel model is simulated in antenna domain with M×N antenna pairs, then simulation accuracy is improved, but hardware resource requirements increase significantly
Solution Approach 1:
The patent segments the M×N antenna domain problem into multiple independent 1×1 beam domain problems by transforming the channel model. Each beam-specific transmit signal is processed separately through its own processing module, dividing the complex multi-antenna simulation into simpler, isolated sub-problems that require fewer hardware resources while maintaining simulation accuracy.
2Adaptability or versatility
If larger antenna systems are simulated, then simulation coverage is improved, but processing effort increases
Solution Approach 1:
The patent enables simulation of larger antenna systems by segmenting the processing into independent beam domain modules. Each processing module handles a specific beam independently, allowing the system to scale to larger antenna configurations without proportionally increasing processing effort, as each 1×1 beam problem can be processed in parallel or independently.
3Productivity
If more hardware resources are allocated, then processing capacity is improved, but system complexity and cost increase
Solution Approach 1:
The patent reduces system complexity by segmenting the channel simulation into multiple simple, identical processing modules operating in the beam domain. Each module processes a single beam-specific signal independently, allowing for modular implementation with standardized components rather than requiring complex interconnected hardware resources.
Data Source
AI summary
A radio channel simulation system comprises a plurality of input buses for receiving a beam-specific transmit signal. A transformation module transforms a channel model from antenna domain to beam domain by using a transformation algorithm and beam forming weights. The channel model represented in the beam domain is inputted into a processing module which processes the beam-specific transmit signals according to the channel model represented in the beam domain.