Real-time software receiver

Pulse or digital communications – Receivers

Reexamination Certificate

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Details

C375S147000, C375S343000, C455S130000

Reexamination Certificate

active

07010060

ABSTRACT:
A real-time software receiver that executes on a general purpose processor. The software receiver includes data acquisition and correlator modules that perform, in place of hardware correlation, baseband mixing and PRN code correlation using bit-wise parallelism.

REFERENCES:
patent: 6407699 (2002-06-01), Yang
patent: WO 2004/036238 (2003-10-01), None
Real-Time GPS Software Radio Receiver, Akos et al., ION NTM 2001, Jan. 22-24, 2001, Long Beach, CA, pp. 809-816.
Global Positioning System Software Receiver(gpSrx)Implementation in Low Cost/Power Programmable Processors, Akos et al., ION GPS 2001, Sep. 11-14, 2001, Salt Lake City, UT, pp. 2851-2858.
GPS Receivers, A.J. Van Dierendonck, Global Positioning System: Theory and Applications, B. W. Parkinson and J.J. Spilker, Jr., Eds., vol. I, American Institute of Aeronautics and Astronautics, 1996, Chapter 8, pp. 329-406.
A Coming of Age for GPS: A RTLINUX Based GPS Receiver, Ledvina et al., Proceedings of the Workshop on Real Time Operating Systems and Applications and Second Real Time Linux Workshop (in conjunction with IEEE RTSS 2000), Nov. 27-28, 2000**, see http://gps.ece.cornell.edu/index.html.
The New L2 Civil Signal, R.D. Fontana et al., Proceedings of the ION GPS 2001, Sep. 11-14, 2001, Salt Lake City, UT, pp. 617-631, see http://www.findarticles.com/cf—dls/m0BPW/9—12/78573899/p8/article.jhtml?term=.
A 12-Channel Real-Time GPS L1 Software Receiver, B. M. Ledvina et al., Proceedings of the ION National Technical Meeting, Jan. 22-24, 2003**, Anaheim, CA, see http://gps.ece.cornell.edu/index.html.
Bit-Wise Parallel Algorithms for Efficient Software Correlation Applied to a GPS Software Receiver, B.M. Ledvina et al., to appear in the IEEE Transactions on Wireless Communications, 2003.
Design and Practical Implementation of Multi-Frequency RF Front Ends Using Direct RF Sampling, M.L. Psiaki et al., Preprint from ION GPS/GNSS 2003.
Design and Implementation of a Direct Digitization GPS Receiver Front End, D.M. Akos, IEEE Transactions on Mocrowave Theory and Techniques, vol. 44, No. 12, Dec. 1996.
A High-Performance Real-Time GNSS Software Receiver and its Role in Evaluating Various Commercial Front End ASICs, Jona Thor, ION GPS 2002, Sep. 24-27, 2002, pp 2554-2560.
U.S. Provisional Appl. No. 60/439,391 filed Jan. 10, 2003. Title: Real-Time Software Receiver. Applicants: Brent M. Ledvina et al.
Software Solution of GPS Baseband Processing, Asai, et al., International Conference on Consumer Electronics, 1998 Digest of Technical Papers, Jun. 2-4, 1998, pp. 180-181.

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