Method and apparatus for controlling transmit diversity in a com

Details Method and apparatus for controlling transmit diversity in a com Method and apparatus for controlling transmit diversity in a com

1997-07-31

2000-10-31

Urban, Edward F.

Telecommunications

Transmitter

Diversity

455103, 455562, 370331, 375299, H04B 102

Patent

active

061415421

ABSTRACT:
Different orthogonal codes (W.sub.x, W.sub.y) are used to spread common pilot channels (Pilot.sub.A) intended for transmission to a particular mobile station (106) within a coverage area (sector A) to implement forward link transmit diversity. The use of different orthogonal codes (W.sub.x, W.sub.y) for each pilot channel (Pilot.sub.A) allows the mobile station (106) to discern which pilot channel spread with a different orthogonal code includes corresponding traffic channel (TCH) information. This allows forward link transmit diversity to be enable/disabled based on conditions associated with the environment, the communications channel, etc. without a complete loss of information as seen by the mobile station (106).

REFERENCES:
patent: 4490830 (1984-12-01), Kai et al.
patent: 5625876 (1997-04-01), Gilbousen et al.
patent: 5652764 (1997-07-01), Kanzaki et al.
patent: 5771461 (1998-06-01), Bruckert et al.
patent: 5781541 (1998-07-01), Schneider
patent: 5812935 (1998-09-01), Kay
patent: 5926503 (1999-07-01), Kelton et al.
patent: 6023615 (2000-02-01), Bruckert et al.
patent: 6038263 (2000-03-01), Kotzin et al.
Fading- Resistant Modulation Using Several Rransmitter Antennas Victor M. DaSlviva and Elivno S. Sousa, pp. (1-5), Aug. 1997.
"Fading Resistant Modulation Using Several Transmitter Antennas", Victor M. DaSilva and Elvino S. Sousa, IEEE Transactions on Communications, Ovl. 45, No. 10, Oct., 1997.

Affiliated with

Also associated with

Rating

Method and apparatus for controlling transmit diversity in a com 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 apparatus for controlling transmit diversity in a com, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling transmit diversity in a com will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2063977