Method and system for multiple antenna communications using multiple transmission modes, related apparatus and computer program product
First Claim
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1. A method of diversity processing at least one signal propagated via at least two diversity antennas comprising the steps of:
- propagating at least two replicas of said at least one signal over respective propagation paths coupled to said at least two diversity antennas, whereby said replicas are propagated via different antennas;
subjecting at least one of said replicas to a time variable delay;
adjusting the power levels of said at least two replicas to produce a level imbalance therebetween;
selectively using one of three or more transmission modes for said at least one signal; and
selecting said level imbalance as a function of a selected transmission mode.
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Abstract
A system for diversity processing a signal propagated via two diversity antennas includes: respective propagation paths for propagating two replicas of the signal, these propagation paths being coupled to the two diversity antennas so that the replicas are propagated via different antennas; a time variable delay element for subjecting at least one of the replicas to a time variable delay; and a level adjusting element, such as an asymmetric splitter, to produce a level imbalance between the power levels of the replicas propagated via the two diversity antennas.
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22 Claims
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1. A method of diversity processing at least one signal propagated via at least two diversity antennas comprising the steps of:
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propagating at least two replicas of said at least one signal over respective propagation paths coupled to said at least two diversity antennas, whereby said replicas are propagated via different antennas; subjecting at least one of said replicas to a time variable delay; adjusting the power levels of said at least two replicas to produce a level imbalance therebetween; selectively using one of three or more transmission modes for said at least one signal; and selecting said level imbalance as a function of a selected transmission mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification