Invention Grant
- Patent Title: Preamble sequence detection of direct sequence spread spectrum (DSSS) signals
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Application No.: US15071998Application Date: 2016-03-16
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Publication No.: US09935681B2Publication Date: 2018-04-03
- Inventor: Srinivas Lingam , Timothy Mark Schmidl
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Kenneth Liu; Charles A. Brill; Frank D. Cimino
- Main IPC: H04B1/00
- IPC: H04B1/00 ; H04B1/7097 ; H04B1/709
Abstract:
A direct sequence spread spectrum (DSSS) receiver includes an antenna, signal-to-noise ratio (SNR) estimation logic, and preamble detection logic. The antenna is configured to receive a DSSS signal. The SNR estimation logic is configured to estimate SNR of the received DSSS signal. The preamble detection logic is configured to, in response to the SNR estimate exceeding a SNR threshold value, detect a preamble sequence in the DSSS signal based on an absolute value of a sequence of correlation values. The sequence of correlation values is a complex quantity.
Public/Granted literature
- US20170272118A1 PREAMBLE SEQUENCE DETECTION OF DIRECT SEQUENCE SPREAD SPECTRUM (DSSS) SIGNALS Public/Granted day:2017-09-21
Information query
