Pulse or digital communications – Spread spectrum
Reexamination Certificate
2004-05-17
2009-12-22
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Spread spectrum
C375S260000, C375S272000, C375S285000, C375S343000, C375S367000, C455S042000, C370S203000
Reexamination Certificate
active
07636380
ABSTRACT:
Orthogonal pulse polarity modulation involves wireless communication in which the polarity of modulating pulses are set responsive to positive and negative character values of a corresponding code sequence. In a described implementation, data is converted to chip waveforms, spectrum lines are removed, and pulses are appropriately shaped. For example, a data bit stream may be converted into chip waveforms using a bit stream-to-symbol segmenter, a symbol-to-code sequence mapper, and a code sequence-to-chip waveform transformer. The polarities of respective individual chips in a given chip waveform match the signs of respective individual characters in a corresponding code sequence.
REFERENCES:
patent: 6603818 (2003-08-01), Dress et al.
patent: 7099366 (2006-08-01), Umeno
patent: 7187715 (2007-03-01), Balachandran et al.
patent: 2003/0165184 (2003-09-01), Welborn et al.
patent: 2004/0141548 (2004-07-01), Shattil
patent: 2004/0240527 (2004-12-01), Giannakis et al.
patent: 2005/0013345 (2005-01-01), Choi
patent: 2005/0041746 (2005-02-01), Rosen et al.
patent: 2005/0117557 (2005-06-01), Lakkis
patent: 2005/0195883 (2005-09-01), Choi et al.
patent: 2005/0220172 (2005-10-01), Mo et al.
patent: 2005/0220173 (2005-10-01), Zyren et al.
patent: 2006/1014024 (2006-06-01), Kohno
Ramirez-Mireles, et al.; “Performance of Equicorrelated Ultra-Wideband Pulse-Position-Modulated Signals in the Indoor Wireless Impulse Radio Channel”; IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, vol. 2, pp. 640-644; 1997.
Eshima, et al; “M-ary UWB System Using Walsh Codes”; Digest of Papers, IEEE Conference on Ultra Wideband Systems and Technology; pp. 37-40; May 2002.
Buehrer, er al.; “Range Extension for UWB Communications”; Virginia Tech, White Paper; May 30, 2002; http://filebox.vt.edu/users
ikumar/.
Scholtz; “Multiple Access with Time-Hopping Impulse Modulation” IEEE Military Communications Conference: Communications on the Move; vol. 2; pp. 447-450; 1993.
Xu, et al., “A Power Efficient M-ary Orthogonal Pulse Polarity Modulation for TH-UWB System Using Modified OVSF Codes” GLOBECOM 2003, IEEE Global Telecommunications Conference Preceedings, San Francisco, CA, Dec. 1-5, 2003, pp. 436-440.
Shaomin S. Mo, “Phase Reversion to Reduce Power Spectral Density of Multi-band UWB Signals” Consumer Communications and Networking Conference, 2004, Las Vegas, NV, Jan. 5-8, 2004, pp. 307-311.
Sheng, et a.l, “On the Spectral and Power Requirements for Ultra-Wideband Transmission” IEEE International Conference on Communications, Anchorage, AK, 2003, May 11-15, 2003, pp. 738-742.
Stanley K. Ling, “TG3 PHY: Channel plan for high-rate WPAN” Jan 15, 2001, Available at URL:http://grouper.ieee.org/groups/802/15/pub/2001/Mar01/.
Guo Zihua
Xu Weiyu
Yao Richard Yuqi
Zhu Wenwu
Lam Kenneth
Lee & Hayes PLLC
Liu Shuwang
Microsoft Corporation
LandOfFree
Orthogonal pulse polarity modulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Orthogonal pulse polarity modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orthogonal pulse polarity modulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4098324