Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2003-07-07
2008-10-07
Payne, David C. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S130000, C375S144000, C370S206000, C370S208000, C370S210000, C370S342000, C370S464000
Reexamination Certificate
active
07433382
ABSTRACT:
A spread spectrum based multichannel modulation Ultra-Wideband (UWB) communication transceiver for indoor wireless operations is presented according to some embodiments. The spread spectrum based multichannels are orthogonal to each other and allow for an operation in parallel. The UWB communication transceiver can also avoid interference with WLAN 802.11a devices in the same environment. In addition, the UWB communication transceiver of the present invention can transmit and receive the scalability chip data rates from 650 Mcps to 7.15 Gcps.
REFERENCES:
patent: 4170760 (1979-10-01), Umeda
patent: 5396489 (1995-03-01), Harrison
patent: 5412352 (1995-05-01), Graham
patent: 5910960 (1999-06-01), Claydon et al.
patent: 6175550 (2001-01-01), van Nee
patent: RE37802 (2002-07-01), Fattouche et al.
patent: 6490267 (2002-12-01), Kim et al.
patent: 2003/0043887 (2003-03-01), Hudson
Ronald Crochiere & Lawrence Rabiner; Multirate Digital Signal Processing; 1983; Prentice-Hall (pp. 252-260, 290-300).
Tewfik et al.; High Bit Rate Ultra-Wideband OFDM; Nov. 17-21, 2002; IEEE Globecom 2002; pp. 2260-2264.
McClellan et al; A Unified Approach to the Design of Optimum FIR Linear Phase Digital Filters; Nov. 1973; IEEE Transactions on Circuit Theory; pp. 697-701.
Bernard Sklar; Digital Communications; 2001; Prentice Hall; pp. 732-735).
DSouza Adolf
Payne David C.
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