Method, Device and System for Detecting Random Access Signal in Interference Environment
First Claim
1. A method for detecting a random access signal in an interference environment, comprising:
- receiving a time-domain random access signal to obtain a frequency-domain random access signal;
obtaining interference cancelling weights respectively according to the frequency-domain random access signal and a frequency-domain local cyclic shift sequence, and performing interference cancelling on the frequency-domain random access signal with the obtained interference cancelling weights; and
performing peak detection on the frequency-domain random access signal on which interference cancelling has been performed.
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Abstract
A method, device and system for detecting a random access signal in an interference environment. The method includes: receiving a time-domain random access signal to obtain a frequency-domain random access signal; obtaining interference cancelling weights according to the frequency-domain random access signal and a frequency-domain local cyclic shift sequence, and performing interference cancelling on the frequency-domain random access signal with obtained interference cancelling weight; and performing peak detection on the frequency-domain random access signal after interference cancelling. The device includes an obtaining module configured to receive a time-domain random access signal to obtain a frequency-domain random access signal; an interference cancellation module configured to calculate interference cancelling weights according to the frequency-domain random access signal and a frequency-domain local cyclic shift sequence, and perform interference cancelling on the frequency-domain random access signal; and a detection module configured to perform peak detection on the frequency-domain random access signal after interference cancelling.
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Citations
23 Claims
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1. A method for detecting a random access signal in an interference environment, comprising:
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receiving a time-domain random access signal to obtain a frequency-domain random access signal; obtaining interference cancelling weights respectively according to the frequency-domain random access signal and a frequency-domain local cyclic shift sequence, and performing interference cancelling on the frequency-domain random access signal with the obtained interference cancelling weights; and performing peak detection on the frequency-domain random access signal on which interference cancelling has been performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device for detecting a random access signal in an interference environment, comprising:
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an obtaining module configured to receive a time-domain random access signal to obtain a frequency-domain random access signal; an interference cancellation module configured to obtain interference cancelling weights according to the frequency-domain random access signal and a frequency-domain local circular shift sequence, and perform interference cancelling on the frequency-domain random access signal; and a detection module configured to perform peak detection on the frequency-domain random access signal on which interference cancelling has been performed. - View Dependent Claims (15, 16, 17, 19, 21)
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18. (canceled)
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20. (canceled)
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22. (canceled)
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23. A system for detecting a random access signal in an interference environment, comprises a terminal and a device for detection, wherein,
the terminal is configured to transmit a random access signal to a base station; - and
the device for detection is configured to receive a time-domain random access signal to obtain a frequency-domain random access signal; and
then according to the frequency-domain random access signal and a frequency-domain local cyclic shift sequence, perform interference cancelling on the frequency-domain random access signal; and
perform peak detection on the frequency-domain random access signal on which interference cancelling has been performed.
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Specification