Diversity receiving system for use in digital radio communicatio

Details Diversity receiving system for use in digital radio communicatio Diversity receiving system for use in digital radio communicatio

1990-07-17

1991-11-12

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

375 14, 455133, H04B 710, H04L 102

Patent

active

050654110

ABSTRACT:
A diversity system comprising two receiving branches for receiving a radio signal including a data signal portion and a training signal portion propagating through a multipath, wherein, in each branch, a transmission property of a propagating path thereto is estimated from the training signal portion received, the transmission property comprising components significant to an equalizer and the remaining insignificant components, a blanch selectors selects, as a selected branch, a specific one of the branches providing the maximum value of a power ratio of the significant components to the insignificant components, and the equalizer equalizes the data signal portion received at the selected branch to produce an equalized signal as a resultant signal of the system. In order to reduce effect to the property estimation from the data signal portion, the branch selector selects, as the selected branches, a particular one of the branches providing the maximum value of a power sum of the significant components and the insignificant components, when another ratio of the power of the significant components and the power some is larger than a predetermined value.

REFERENCES:
patent: 4384358 (1983-05-01), Shiki et al.
patent: 4672629 (1987-06-01), Beier
patent: 4733402 (1988-03-01), Monsen
patent: 4748682 (1988-05-01), Fukar et al.
patent: 4850037 (1989-07-01), Bochmann
patent: 4884272 (1989-11-01), McConnell
patent: 4926498 (1990-05-01), Suzuki et al.
patent: 4935940 (1990-06-01), Reindl

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