Dynamic Diversity Receiver Allocation for Wireless Systems
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Solution Overview
Problem
Current wireless communication systems require a large number of receivers to achieve full diversity reception, leading to increased cost and size, especially in scenarios like V2V communication where multiple independent channels need to be processed concurrently.
Innovation Solution
Implementing a system with dynamically controlled diversity reception that uses a number of receivers smaller than twice the number of channels, achieved through dynamic multiple channel allocation and arbitration between channel state machines, allowing each receiver to process a single channel and utilizing a fast lock control mechanism to accelerate locking times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full diversity implementation is used for multiple channels, then communication quality is improved, but the number of receivers increases leading to higher cost and larger system size
Solution Approach 1:
The patent implements dynamic receiver allocation where receivers are not permanently assigned to specific channels but are dynamically allocated based on current channel conditions and quality requirements. The system continuously monitors channel states and reassigns receivers to optimize communication quality while minimizing the number of active receivers at any given time, thus reducing overall system complexity and cost.
Solution Approach 2:
Each receiver is designed to be universal and capable of processing multiple channels, rather than being dedicated to a single channel. This multi-functionality allows the same receiver hardware to serve different channels at different times, reducing the total number of receivers needed while maintaining full diversity capabilities across all channels.
2Device complexity
If switching diversity is used to reduce the number of receivers, then device complexity is reduced, but communication quality and diversity gain are compromised
Solution Approach 1:
The system dynamically switches between full diversity mode and reduced diversity mode based on channel conditions. When channel quality requires maximum diversity, the system activates more receivers and uses full diversity combining. When channel conditions are good, the system reduces the number of active receivers while maintaining acceptable quality, thus achieving adaptive optimization between complexity and performance.
Solution Approach 2:
The patent changes the diversity order parameter dynamically based on channel conditions. Instead of using a fixed diversity order, the system adjusts the number of antennas and receivers used for diversity combining according to the measured channel quality, allowing the system to maintain high communication quality when needed while reducing complexity when possible.
3Reliability
If two receivers are allocated to each channel for full diversity, then communication quality is improved, but the system size and cost increase significantly
Solution Approach 1:
The system uses dynamic receiver allocation where the number of receivers assigned to each channel varies over time based on channel conditions. Instead of permanently allocating two receivers to each channel, the system monitors channel quality and temporarily assigns additional receivers only when channel conditions deteriorate, thus maintaining communication quality while minimizing the average number of receivers needed and reducing overall system size.
Data Source
AI summary
Systems for supporting multi-channel dynamically controlled diversity reception in wireless communications include a plurality M of receivers coupled to M antennas and configured handle N communication channels wherein N≦M≦(2*N−1) and N channel state machines configured to dynamically allocate multiple channels of the N channels to the M receivers to support dynamic switched diversity for multi-channel dynamically controlled reception. Each channel state machine is configured to control the operation of each receiver. Arbitration is performed between channel state machines when such channel state machines work concurrently. In some embodiments, a lock state machine inside each channel state machine accelerates the locking time of a receiver based on at least one parameter received from another receiver.