Diversity Receiver Cross-Coupled Channel Estimation
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Solution Overview
Problem
Existing diversity receivers require substantial processing power for channel reception and selection, leading to inefficiencies in multipath distortion reduction and channel stability in spread spectrum communication environments.
Innovation Solution
The diversity receiver employs channel parameter estimating means in one branch to aid estimation in another branch, sharing information to reduce redundant calculations and enhance accuracy, allowing for more efficient use of processing power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If independent channel parameter estimation is performed in each diversity branch, then estimation accuracy for each branch is maintained, but processing power requirements increase substantially
Solution Approach 1:
The patent combines channel parameter estimation operations across multiple diversity branches by allowing one branch to share its estimation results with other branches. Specifically, the channel parameter estimating means in one branch are coupled to the channel parameter estimating means in another branch, enabling the use of at least part of the channel parameter estimate from one branch as an aid for estimating the receiving channel parameter in another branch. This merging reduces redundant calculations and substantially lowers processing power requirements while maintaining estimation accuracy.
2Measurement precision
If full channel parameter estimation is performed in each branch, then accurate channel knowledge is obtained, but processing time and computational complexity increase
Solution Approach 1:
The patent applies preliminary action by having one diversity branch perform channel parameter estimation first, and then use these pre-computed results to aid estimation in other branches. The channel parameter estimate from one branch serves as a starting point or aid for other branches, eliminating the need for each branch to perform complete independent estimation. This reduces processing time significantly while maintaining accurate channel knowledge.
3Adaptability or versatility
If independent processing is used in each diversity branch, then branch autonomy is maintained, but redundant calculations increase processing power requirements
Solution Approach 1:
The patent implements universality by creating a shared channel parameter estimation resource that serves multiple diversity branches. The channel parameter estimating means are designed to function both independently for their own branch and cooperatively by sharing results with other branches. This multi-functionality allows branches to maintain autonomy when needed while utilizing shared estimation results to reduce processing power consumption when channel conditions are correlated across branches.
Data Source
AI summary
A diversity receiver has multiple antenna receiving branches. Each branch has means for estimating at least a receiving channel parameter, and the channel parameter estimating means in one branch are coupled to the channel parameter estimating means in an other branch. This way at least a part of the channel parameter estimate in the one branch is used as an aid for estimating at least a receiving channel parameter in the other branch. This saves processing time and processing power in the diversity receiver, and even results in a higher accuracy when selecting the best antenna and receiving branch.