Antenna Sub-Grouping for Multi-Carrier MIMO Reception
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently receiving multiple carriers within a single frequency band due to increased hardware requirements and crosstalk issues, which degrade signal transmission and reception.
Innovation Solution
A device with multiple antennas and configurable receive chains that group carriers with specific sub-groups of antennas to minimize crosstalk, using a controller to assign carriers based on antenna and component isolations, allowing for flexible trade-offs between the number of carriers and antennas, thereby reducing the need for additional hardware and mitigating crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple carriers are received using traditional separate receive chains for each carrier, then carrier reception capability is improved, but device complexity and hardware requirements increase
Solution Approach 1:
The patent applies multi-functionality by enabling each receive chain to handle multiple carriers through dynamic carrier assignment. The controller assigns different carriers to the same receive chain at different times or in different configurations, allowing a single receive chain to serve multiple purposes for multiple carriers, thereby reducing the total number of receive chains needed while maintaining the ability to receive multiple carriers simultaneously.
Solution Approach 2:
The patent implements dynamics through dynamic carrier assignment and configuration of receive chains. The controller dynamically assigns carriers to receive chains based on current operational requirements, allowing flexible reconfiguration of which carriers are processed by which receive chains. This dynamic allocation enables the system to adapt to different carrier combinations without requiring dedicated hardware for each possible configuration.
2Adaptability or versatility
If multiple carriers are received using traditional receive chains, then carrier reception capability is improved, but crosstalk between carriers increases
Solution Approach 1:
The patent applies segmentation by dividing the reception system into separate antenna groups and receive chain configurations that are assigned to different carriers. By segmenting the reception paths and assigning specific antennas and receive chains to specific carriers, the system reduces interference between carriers. The controller manages these segmented configurations to ensure that carriers with potential crosstalk issues are processed by spatially separated or isolated receive paths.
Solution Approach 2:
The patent implements local quality by assigning different receive chain configurations to different carriers based on their specific requirements and interference characteristics. Each carrier can be assigned to receive chains with specific local characteristics (such as particular antenna combinations or filtering configurations) that are optimized for that carrier's frequency and interference profile, thereby reducing crosstalk while maintaining reception capability.
3Productivity
If the number of carriers to be received is increased, then data rate capability is improved, but the number of required receive chains increases
Solution Approach 1:
The patent applies multi-functionality by enabling each receive chain to handle multiple carriers through dynamic carrier assignment. The controller assigns different carriers to the same receive chain at different times or in different configurations, allowing a single receive chain to serve multiple purposes for multiple carriers, thereby reducing the total number of receive chains needed while maintaining the ability to receive multiple carriers simultaneously.
Solution Approach 2:
The patent implements merging by combining multiple carrier reception functions into fewer receive chains through shared resources. Instead of having dedicated receive chains for each carrier, the system merges the reception of multiple carriers into shared receive chain configurations, with the controller managing the allocation and timing to ensure proper separation and processing of multiple carriers simultaneously.
Data Source
AI summary
A method and apparatus for receiving and processing multiple carriers with multiple antennas. The device includes a plurality of antennas for receiving signals over a plurality of carriers, and a plurality of receive chains connected to each antenna for processing a signal received on each antenna. The signal received on each antenna is split into multiple receive chains for receive processing. The antennas are grouped into a plurality of sub-groups and a signal on a first carrier is received on a first sub-group of antennas and a signal on a second carrier is received on a second sub-group of antennas. A signal on a third carrier may be received on all antennas. Multiple-input multiple-output (MIMO) on the first and second carriers may be implemented using the first and second sub-group of antennas, respectively, and MIMO on the third carrier may be implemented using all antennas.