Efficient and flexible GPS receiver baseband architecture

Details Efficient and flexible GPS receiver baseband architecture Efficient and flexible GPS receiver baseband architecture

2005-05-06

2008-09-23

Payne, David C. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

07428259

ABSTRACT:
The present invention provides a new baseband integrated circuit (IC) architecture for direct sequence spread spectrum (DSSS) communication receivers. The baseband IC has a single set of baseband correlators serving all channels in succession. No complex parallel channel hardware is required. A single on-chip code Numerically Controlled Oscillator (NCO) drives a pseudorandom number (PN) sequence generator, generates all code sampling frequencies, and is capable of self-correct through feedback from an off-chip processor. A carrier NCO generates corrected local frequencies. These on-chip NCOs generate all the necessary clocks. This architecture advantageously reduces the total hardware necessary for the receiver and the baseband IC thus can be realized with a minimal number of gate count. The invention can accommodate any number of channels in a navigational system such as the Global Positioning System (GPS), GLONASS, WAAS, LAAS, etc. The number of channels can be increased by increasing the circuit clock speed.

REFERENCES:
patent: 4578678 (1986-03-01), Hurd
patent: 4651154 (1987-03-01), Wong et al.
patent: 4689626 (1987-08-01), Hori et al.
patent: 4807256 (1989-02-01), Holmes et al.
patent: 5185618 (1993-02-01), Park
patent: 5192957 (1993-03-01), Kennedy
patent: 5271034 (1993-12-01), Abaunza
patent: 5402442 (1995-03-01), Ishigaki
patent: 5504684 (1996-04-01), Lau et al.
patent: 5535237 (1996-07-01), LaPadula, III et al.
patent: 5847678 (1998-12-01), Tachita
patent: 5877724 (1999-03-01), Davis
patent: 6067328 (2000-05-01), Lewellen et al.
patent: 6067614 (2000-05-01), Goto
patent: 6311129 (2001-10-01), Lin
patent: 6330274 (2001-12-01), Uehara
patent: 6421372 (2002-07-01), Bierly et al.
patent: 6480150 (2002-11-01), Falk et al.
patent: 6526322 (2003-02-01), Peng et al.
patent: 6646595 (2003-11-01), Heng et al.
patent: 6724807 (2004-04-01), Krasner et al.
patent: 6831911 (2004-12-01), Sridharan et al.
patent: 6845124 (2005-01-01), Mattos et al.
patent: 7064707 (2006-06-01), Martin
patent: 2002/0012387 (2002-01-01), Shakeri et al.
patent: 2002/0113734 (2002-08-01), King
patent: 2004/0252049 (2004-12-01), Vantalon et al.
patent: 2005/0248483 (2005-11-01), Martin
patent: 2006/0107008 (2006-05-01), Ghanem et al.
patent: WO/2004/017089 (2004-02-01), None
Onodera, K.; Gray, P.R.,“A 75mW 128 MHz DS-CDMA Baseband Correlator For High-speed Wireless Applications”, VLSI Circuits, 1997. Digest of Technical Papers., 1997 Symposium on Jun. 12-14, 1997 pp. 117-118.
Gregory W. Heckler et al., “Architecture of a Reconfigurable Software Receiver,” ION GNSS, 2004, pp. 947-955.
Katsuyuki et al., “A high performance GPS solution for mobile use,” ION GPS 2002, pp. 1648-1655.
Philip G. Mattos, “Palinuro . . . A single chip GPS Receiver—RF, DSP, CPU, ROM, RAM, All in one piece of silicon,” ION GNSS, 2004, pp. 1501-1506.
Geraint et al., “Navajo GPS ASIC The Ultimate single chip baseband,” ION GNSS, 2004, pp. 1488-1493.
Dennis M. Akos et al., “Global Positioning System Software Receiver (gpSrx) Implementation in low Cost/Power Programmable Processors,” ION GPS 2001, Sep. 11-14, 2001, Salt Lake City, UT, pp. 2851-2858.

Affiliated with

Also associated with

Rating

Efficient and flexible GPS receiver baseband architecture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Efficient and flexible GPS receiver baseband architecture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Efficient and flexible GPS receiver baseband architecture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3967685