Method and apparatus to implement antenna diversity for direct s

Details Method and apparatus to implement antenna diversity for direct s Method and apparatus to implement antenna diversity for direct s

1997-08-21

1999-09-07

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375206, 455137, 455273, 4552761, 4552781, 455304, H04B 708

Patent

active

059498331

ABSTRACT:
An invention for providing diversity for direct sequence spread spectrum wireless communication systems is presented. The invention provides a receiver technique in which M antennas are utilized at the receiver. Distinct weighting signals are applied to information signals received at each of the M antennas, with the weighing signals being, for example, distinct changes in either phase or amplitude. Applying weighing signals to each of the information signals received at the M receiver antennas results in constructive addition of derived signal vectors at predetermined intervals, which eliminates deep fading at the receiver. Each different time varying weighting signal is determined independently of the corresponding information signal and the combined received input signal.

REFERENCES:
patent: 4752969 (1988-06-01), Rilling
patent: 5107273 (1992-04-01), Roberts
patent: 5255210 (1993-10-01), Gardner et al.
patent: 5289499 (1994-02-01), Weerackody
patent: 5305353 (1994-04-01), Weerackody
patent: 5481570 (1996-01-01), Winters
"A Fading Reduction Technique Using Interleave-Aided Open Loop Space Diversity for Digital Maritime-Satellite Communications," by H. Iwai et al, IEICE Transactions, vol. E 74, No. 10, Oct., 91, pp. 3286-3294.

Affiliated with

Also associated with

Rating

Method and apparatus to implement antenna diversity for direct s 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 to implement antenna diversity for direct s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus to implement antenna diversity for direct s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1811839