Method and apparatus to detect random access channel preamble

Details Method and apparatus to detect random access channel preamble Method and apparatus to detect random access channel preamble

2008-02-21

2011-11-15

Torres, Juan A (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C370S320000, C370S335000, C370S342000, C370S441000, C370S479000, C370S515000, C708S422000

Reexamination Certificate

active

08059765

ABSTRACT:
A method (and operation of a computer program and an apparatus) includes receiving a signal over a wireless channel; correlating the received signal with a reference sequence and providing a correlation output; processing the correlation output to detect a presence of a first predetermined preamble sequence using a main correlation peak and two first order frequency shift peaks and nulling second and higher order frequency shift peaks from the correlation output prior to further processing the correlation output to detect a presence of a second predetermined preamble sequence.

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3GPP TS 36.300, V8.3.0 (Dec. 2007), 3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release8), 121 pgs.
3GPP TS 36.321, V8.0.0 (Dec. 2007), 3rdGeneration Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) Medium Access Control (MAC) protocol Specification (Release 8), 23 pgs.

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