Cross-correlation suppression technique for position...

Details Cross-correlation suppression technique for position... Cross-correlation suppression technique for position...

2006-09-21

2008-10-28

Issing, Gregory C (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C375S148000, C455S278100

Reexamination Certificate

active

07443339

ABSTRACT:
The present disclosure provides various methods and devices for suppressing cross-correlation effects in positioning signals. When there is a power imbalance between a weaker positioning signal and an interfering positioning signal, and certain Doppler offsets exist, cross-correlation may make it difficult to acquire the weaker signal. However, a receiver may use the transmit signal spectrum of the interfering signal to identify frequency bins which contain a lower power for the transmitted interfering signal. The receiver then emphasizes the identified frequency bins in the detection of the desired positioning signal.

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patent: 2007/0024499 (2007-02-01), Bochkovskiy et al.
Laster, D et al, “Interference Rejection in Digital Wireless Communications,” IEEE Signal Processing Magazine, IEEE Service Center, Piscataway, NJ, US, vol. 14(3), May 1997.

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