Time-Switched MIMO Packet Analysis With One RF Receiver
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Solution Overview
Problem
Conventional test equipment for MIMO data packet signals requires multiple receivers, increasing costs and test time, and struggles to capture consecutive packets efficiently due to the need for increased capture windows and synchronization delays.
Innovation Solution
A time-switched MIMO signal analysis method using a single RF signal receiver captures multiple incoming data packet signals by initiating captures at different times based on the periodicity of the data frames, allowing simultaneous analysis of multiple streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple receivers are used to capture multiple MIMO data packet streams simultaneously, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent segments the capture process by time, using a single receiver to capture different MIMO data packet streams at different time instances. The receiver alternates between capturing packets from different transmitters in sequential time slots, eliminating the need for multiple simultaneous receivers while maintaining the ability to analyze multiple streams.
Solution Approach 2:
The patent transitions from a spatial dimension (multiple receivers simultaneously capturing multiple streams) to a temporal dimension (single receiver capturing multiple streams at different time instances). This dimensional change allows the system to achieve multi-stream capture capability without proportionally increasing hardware complexity.
2Productivity
If capture window is increased to capture consecutive packets, then productivity is improved, but loss of time increases due to longer transfer and analysis duration
Solution Approach 1:
The patent segments the capture operation into discrete time slots, each dedicated to capturing a specific data packet stream. This segmentation allows the single receiver to efficiently capture consecutive packets from different transmitters without requiring a proportionally larger capture window, as each slot is optimized for its specific stream.
Solution Approach 2:
The patent employs periodic action by systematically alternating the receiver between different MIMO data packet streams in a repeating cycle. This periodic capture pattern enables consecutive packet capture across multiple streams while maintaining efficient time utilization, as the receiver continuously captures packets without idle gaps between streams.
3Productivity
If testing is performed with MIMO transmitters operating in parallel, then productivity is improved, but heat buildup increases affecting performance
Solution Approach 1:
The patent segments the testing process by capturing different MIMO data packet streams at different time instances using a single receiver. This temporal segmentation allows parallel transmitter operation during capture without requiring simultaneous receiver engagement, thereby maintaining productivity while managing thermal effects through reduced receiver power consumption.
Solution Approach 2:
The patent effectively creates a temporal copy of the capture process, where the single receiver captures different streams at different times rather than simultaneously. This copying approach preserves the ability to test multiple parallel transmitters while avoiding the heat buildup issues that would arise from continuous high-power receiver operation.
Data Source
AI summary
System and method for implementing a time-switched MIMO signal analysis using a single RF signal receiver to capture the multiple incoming data packet signals. In accordance with example embodiments, like portions of repetitive data slots may be captured with a periodicity equal to that of their host repetitive data frames.