Method and system for doubling the spectrum efficiency in a...

Details Method and system for doubling the spectrum efficiency in a... Method and system for doubling the spectrum efficiency in a...

2005-10-11

2005-10-11

Gesesse, Tilahun (Department: 2684)

Telecommunications

Transmitter

Diversity

C455S562100, C455S561000, C370S315000

Reexamination Certificate

active

06954619

ABSTRACT:
Described is a method and system for increasing the spectrum efficiency in a radio transmission system. Advantageously, the interference phenomenon is used for transmitting two different signals, by utilizing for each of them carriers at the same frequency, thus obtaining in this way a doubling of the spectrum efficiency. Practically, the same signal is transmitted by two different antennas in order to have two coherent signal sources. On the receiving front, there are points of maximum and minimum of this signal. If the original signal is properly phase shifted with an antenna vis-à-vis the other one, the effect will be to arrange the maxima and minima on the receiving front in a corresponding way. The present invention allows for the use of dual polarization antennas (H and V or any other type of orthogonal polarization) to obtain a still higher spectrum efficiency.

REFERENCES:
patent: 5432522 (1995-07-01), Kurokami
patent: 5613219 (1997-03-01), Vogel et al.
patent: 6125109 (2000-09-01), Fuerter
patent: 6459740 (2002-10-01), Lo
patent: 6658269 (2003-12-01), Golemon et al.
patent: 6771706 (2004-08-01), Ling et al.
patent: 6785520 (2004-08-01), Sugar et al.
patent: 2002/0150070 (2002-10-01), Shattil

Affiliated with

Also associated with

Rating

Method and system for doubling the spectrum efficiency in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for doubling the spectrum efficiency in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for doubling the spectrum efficiency in a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3467788