Sequence Transmission Using Golay Pairs for Low-Ambiguity Detection
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Solution Overview
Problem
Current designs for sequence-based detection in downlink synchronization, random access, sensing, and radar systems lack optimization in detection performance, particularly in accurately determining the position and speed of target objects.
Innovation Solution
A sequence transmission method involving the determination of N first sequences based on a first extension sequence, where each sequence forms a Golay complementary pair, and the degree of equal sums of powers is greater than or equal to 1, enhancing the low ambiguity zone of the spectral function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a time domain signal is generated based on a plurality of sequences for detection, then detection capability is provided, but detection performance (position and speed accuracy) is insufficient
Solution Approach 1:
The patent changes the parameters of the sequences by introducing a first extension sequence with specific properties (first solution of equal sums of powers with degree ≥1) to generate modified sequences. This parameter change transforms the spectral function to achieve a low ambiguity zone, thereby improving position and speed detection accuracy while maintaining detection capability.
2Measurement precision
If the degree of the first solution of equal sums of powers is increased to improve the low ambiguity zone, then detection performance improves, but sequence design complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-determining the first extension sequence with the required equal sums of powers property before generating the actual detection sequences. This allows the complex sequence design to be done in advance, simplifying the overall system implementation while ensuring the low ambiguity zone property is achieved.
Data Source
AI summary
A sequence transmission method and an apparatus are provided. An example method includes: A transmit end apparatus determines N first sequences, where an nth first sequence in the N first sequences is determined based on an nth second sequence in N second sequences, the nth second sequence is determined based on an nth element in a first extension sequence, n=0, 1, . . . , N−1, N is a positive integer greater than 1, a first solution of equal sums of powers is determinable based on the first extension sequence, and a degree of the first solution of the equal sums of powers is greater than or equal to 1. The transmit end apparatus sends N1 first sequences in the N first sequences, where each of N1 second sequences corresponding to the N1 first sequences is a sequence in a Golay complementary pair GCP, and N1 is less than or equal to N.