Optimizing the analog BER function in a spatial angular diversit

Details Optimizing the analog BER function in a spatial angular diversit Optimizing the analog BER function in a spatial angular diversit

1994-09-12

1996-12-03

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375225, 455135, 455139, H04B 1702

Patent

active

055815839

ABSTRACT:
A radio link for a digital radio transmission system having spatial and/or angular diversity is optimized in real time by searching for a minimum of the analog BER function BERn(.phi.), by analyzing the minimum to determine if it is an "absolute" minimum that will result in an optimal radio link, and if not, searching for another minimum until the absolute minimum is located. Once the relative phase .phi. corresponding to the absolute minimum has been thus determined with both channels having the same nominal attenuation level, the relative attenuation level T of the two channels may then be varied in order to optimize the dispersion Ban.sub.n (T) of the recombined data spectrum while holding the relative phase at its previously optimized value.

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Luca et al; Commutation & Transmission; "New Generation 40 and 155 Mbit/s Digital Microwave System"; 1991; No. 3, pp. 61-76.
Casiraghi et al; Proceedings of 22nd European Microwave Conference; "Mibs If Combiner for Space and Angle Diversity in Digital Radio: First Trial Results"; Tunbridge Wells; 1992; pp. 1143-1148.

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