Parallel Gold Code Generators for Rapid Spread Spectrum Acquisition
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Solution Overview
Problem
Current spread spectrum communication systems face challenges in rapidly acquiring Gold codes due to complex synchronization processes, which leads to time-consuming code acquisition, especially in high-speed applications where quick synchronization is critical.
Innovation Solution
The implementation of multiple Gold code generators operating in parallel, pre-loaded with different initial values, allows for simultaneous synchronization with received codes, reducing the time required for code acquisition by evaluating all possible Gold code sequences in parallel and selecting the best correlated generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional serial search methods are used for code acquisition, then the receiver can systematically search for the correct PN code, but the code acquisition time becomes excessively long
Solution Approach 1:
The patent divides the code acquisition process into multiple parallel search paths by using multiple PN code generators operating simultaneously. Each generator searches for code synchronization independently, transforming a single sequential search into multiple parallel searches that complete much faster.
Solution Approach 2:
The patent pre-loads multiple PN code generators with different initial code sequences before the actual acquisition process begins. This preliminary configuration allows the generators to start searching in parallel from different starting points, significantly reducing the time required to find the correct code.
2Speed
If multiple PN code generators operate in parallel, then code acquisition speed increases, but the device complexity increases
Solution Approach 1:
The patent combines multiple PN code generators and correlators into a unified parallel architecture where all generators share common input signals and processing resources. This merging approach achieves parallel processing speedup while minimizing the increase in overall device complexity through resource sharing.
Solution Approach 2:
The patent designs the parallel PN code generators to perform multiple functions: code generation, correlation testing, and synchronization detection. Each generator serves as a multi-functional unit that contributes to both speedup and functional completeness, reducing the need for separate dedicated components.
Data Source
AI summary
Methods and structure for improved speed in pseudo-noise code acquisition. A receiver may include features to evaluate multiple potential pseudo-noise (PN) digital code sequences in parallel to more rapidly acquire the PN code utilized by a corresponding transmitter. Multiple PN code generators may operate substantially in parallel each pre-loaded to generate one of the set of possible Gold codes for the shift register tap configuration. One of the generators will correlate with the sequence generated by the transmitter by exceeding a predetermined correlation threshold value. That PN code sequence may be identified as the correct PN code sequence for decoding data received on the communication medium intended for the particular user using the PN code. As compared to prior sequential techniques, features and aspects hereof more rapidly acquire the PN digital code sequence utilized by an associated transmitter.