Cross polarization interference compensating device comprising d

Details Cross polarization interference compensating device comprising d Cross polarization interference compensating device comprising d

1994-12-14

1995-07-11

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including polarized signal communication transmitter or...

342362, 455295, H01Q 2106, H04B 110

Patent

active

054325226

ABSTRACT:
On receiving a symbol sequence carried by a first-polarization and a second-polarization signal of two orthogonally polarized signals and in order to cancel a cross polarization interference (XPI) component which leaks from the second-polarization signal into the first-polarization signal, a first decision feedback XPI canceller (43) is supplied with a before processed signal derived from the second-polarization signal and with a decided signal which is produced by a decision circuit (22) and which represents the symbol sequence carried by the second-polarization signal with an intersymbol interference component and another XPI component cancelled from the before processed signal. Another decision feedback XPI canceller (44) is similarly operable. Preferably, a first decision feedback equalizer (41) is supplied with another before processed signal derived from the first-polarization signal and with another decided signal which is produced by another decision circuit (21) and which represents the symbol sequence carried by the first-polarized signal with another intersymbol interference component and the first-mentioned XPI component cancelled from the last-mentioned before processed signal. A second decision feedback equalizer (42) is similarly used. Alternatively, a delay element is used instead of each decision feedback equalizer if the intersymbol interference components are negligible.

REFERENCES:
patent: 4577330 (1986-03-01), Kavehrad
patent: 4631734 (1986-12-01), Foschini
patent: 4644562 (1987-02-01), Kavehrad et al.
patent: 5075697 (1991-12-01), Koizumi et al.
Onde Electrique, vol. 66, No. 3, May 1986, Paris, FR, pp. 82-91, Borgne et al., "Resultats de l'etude de compensation d'interference cofrequence".
"Dezitaru Shingo Syori (Digital Signal Processing)" published by the Institute of Electronics and Electric Communication, Chapter, 11, Table 11.2 (p. 241).
J. G. Proakis, "Digital Communications", McGraw-Hill, 1983, pp. 382-386.
H. Ohtuska et al., "The SBS Control Algorithm of Cross Polarization . . . on Digital Radio Systems", The Transactions of the IEICE, vol. E 73, No. 3, Mar. 1990, pp. 401-408.

Affiliated with

Also associated with

Rating

Cross polarization interference compensating device comprising d does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cross polarization interference compensating device comprising d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross polarization interference compensating device comprising d will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-506224