Apparatus and method for digital wireless communications

Details Apparatus and method for digital wireless communications Apparatus and method for digital wireless communications

2008-04-15

2008-04-15

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Transmitters

Quadrature amplitude modulation

C375S261000, C370S335000

Reexamination Certificate

active

10781839

ABSTRACT:
A digital wireless communication apparatus includes a first modulator that modulates a pilot symbol according to a first modulation scheme, and a second modulator that modulates specific symbols according to a second modulation scheme, the second modulation scheme being different than the first modulation scheme. A third modulator modulates symbols other than the pilot symbol and the specific symbols according to a third modulation scheme, the third modulation scheme being different than the first and second modulation schemes. A timing controller controls timing such that the specific symbols are inserted immediately before and after the pilot symbol. The signal points of the specific symbols are allocated on an imaginary line that connects the origin point and a signal point of the pilot symbol on a signal space diagram.

REFERENCES:
patent: 5499395 (1996-03-01), Doi et al.
patent: 5771224 (1998-06-01), Seki et al.
patent: 5870393 (1999-02-01), Yano et al.
patent: 6154298 (2000-11-01), Tamagawa
patent: 6175558 (2001-01-01), Miya
patent: 6226337 (2001-05-01), Klank et al.
patent: 6252864 (2001-06-01), Hayashi
patent: 6259728 (2001-07-01), Sharma et al.
patent: 6301237 (2001-10-01), Miya
patent: 6370131 (2002-04-01), Miya
patent: 6466563 (2002-10-01), Yamada
patent: 6529492 (2003-03-01), Miya
patent: 6549526 (2003-04-01), Miya
patent: 6580705 (2003-06-01), Riazi et al.
patent: 6584088 (2003-06-01), Miya
patent: 6608868 (2003-08-01), Murakami et al.
patent: 6738430 (2004-05-01), Murakami et al.
patent: 6748023 (2004-06-01), Murakami et al.
patent: 6888789 (2005-05-01), Sakoda et al.
patent: 0734132 (1996-09-01), None
patent: 1052821 (2000-05-01), None
patent: 9-093302 (1997-08-01), None
patent: WO9507581 (1995-03-01), None
English Language Abstract of JP 9-093302.
Sampei, S., Technical Report of IEICE B-11, vol. J72-B-11, No. 1, Jan. 1989, pp. 7-15, together with an English language summary of the same.

Affiliated with

Also associated with

Rating

Apparatus and method for digital wireless communications does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for digital wireless communications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for digital wireless communications will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3951711