Pulse or digital communications – Pulse position – frequency – or spacing modulation
Reexamination Certificate
2006-06-27
2006-06-27
Kim, Kevin (Department: 2638)
Pulse or digital communications
Pulse position, frequency, or spacing modulation
Reexamination Certificate
active
07068715
ABSTRACT:
An ultra-wideband (UWB) communications system combines the techniques of a transmitted reference (TR) and a multiple access scheme called delay hopping (DH). Combining these two techniques using UWB signaling using a continuous noise transmitted waveform avoids the synchronization difficulties associated with conventional approaches. This TR technique is combined with the DH multiple access technique to create a UWB communications scheme that has a greater multiple access capacity than does the UWB TR technique by itself.
REFERENCES:
patent: 4641317 (1987-02-01), Fullerton
patent: 6252962 (2001-06-01), Sagey
patent: 6810087 (2004-10-01), Hoctor et al.
“Impulse Radio: How It Works,” Moe Z. Win, Robert A. Scholtz, IEEE Communications Letters, vol. 2, No. 2, Feb. 1998, pp. 36-38.
“Transmitter Location for Ultra-Wideband, Transmitted-Reference, CDMA Communication System,” RT Hoctor; JE Hershey; NA Van Stralen; HW Tomlinson, Jr., U.S. Appl. No. 09/973,140.
Davenport David Michael
Dentinger Aaron Mark
Hershey John Erik
Hoctor Ralph Thomas
Tomlinson, Jr. Harold Woodruff
Genral Electric Company
Ingraham Donald S.
Kim Kevin
Testa Jean K.
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