Downlink acquisition

Details Downlink acquisition Downlink acquisition

2011-06-14

2011-06-14

Trost, IV, William (Department: 2472)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Fourier transform

C370S514000, C370S516000, C375S354000

Reexamination Certificate

active

07961593

ABSTRACT:
The subject matter disclosed herein provides methods and apparatus, including computer program products, for detecting a preamble to enable acquisition of a downlink. In one aspect, there is provided a method. The method may include receiving a plurality of symbols. From an autocorrelation of the received symbols, a guard interval may be detected. The guard interval may represent a receive/transmit transition gap (RTG). A metric may be used to verify whether at least one symbol positioned after the detected guard interval is a preamble. Related systems, apparatus, methods, and/or articles are also described.

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Form PCT/ISA/220 Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Report, or the Declaration, mailed Jun. 24, 2009 for corresponding PCT Application PCT/US2009/032165.

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