Transmission diversity with two cross-polarised antennas arrays

Details Transmission diversity with two cross-polarised antennas arrays Transmission diversity with two cross-polarised antennas arrays

2006-11-14

2006-11-14

Maung, Nay (Department: 2618)

Telecommunications

Transmitter

Diversity

C455S562100, C455S575700, C455S063400

Reexamination Certificate

active

07136627

ABSTRACT:
A method for selecting a diversity mode to be applied by a transmitter having two cross-polarized antenna arrays, each representing a diversity branch, comprising the steps of: providing a plurality of diversity mode performance chart look-up tables, mapping a respective individual diversity mode to a respective pair of time correlation value and space correlation value for the two cross-polarized antenna array beams, wherein a respective individual diversity mode is presented by a mapping area, wherein the plurality of performance chart look-up tables is parameterized by an indication of a ratio of received powers from the diversity branches, first selecting one of the performance chart look-up tables dependent on determined ratio of received powers from separate beams, and second selecting one of the individual diversity modes according to the mapping to the determined actual time relation and space correlation values from the first selected performance chart look-up table.

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