| US 7,539,235 B2 | ||
| Matched filter for scalable spread spectrum communications systems | ||
| W. Kurt Dobson, Sandy, Utah (US); Dirk Ostermiller, Draper, Utah (US); Sy Prestwich, Riverton, Utah (US); and Scott Bevan, Lehi, Utah (US) | ||
| Assigned to S5 Wireless, Inc., Sandy, Utah (US) | ||
| Filed on Sep. 04, 2007, as Appl. No. 11/849,944. | ||
| Application 11/849944 is a continuation of application No. 11/427256, filed on Jun. 28, 2006, granted, now 7,280,579. | ||
| Application 11/427256 is a continuation of application No. 10/670708, filed on Sep. 24, 2003, granted, now 7,092,426. | ||
| Prior Publication US 2007/0291821 A1, Dec. 20, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04B 1/00 (2006.01) | ||
| U.S. Cl. 375—130 [375/141] | 9 Claims |
| 1. A transmitter for a spread spectrum communications system, comprising:
a data source;
a first multiplier/mixer spreading data from said data source with a first pseudo noise source;
a second multiplier/mixer spreading data from said first mixer with a second pseudo noise source, wherein the first pseudo
noise source and the second pseudo noise source are not used to lock a receiver to the transmitter; and
an RF transmitter.
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