Transmission of precoding codebook over an air interface
AssigneeAlcatel Lucent
InventorsRupert Rheinschmitt, Christian Gerlach, Thorsten Wild, Howard Huang, Matthew P J Baker
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Abstract
Embodiments of the present invention include a system for transmitting a precoding codebook over an air interface. The system includes a first station configured to signal a set of indicators via at least one antenna to a second station from which the precoding codebook is derived at the second station based on the signaled set of indicators. The set of indicators includes less information than the precoding codebook.
Claims21
A system for transmitting a precoding codebook over an air interface, the system comprising:
- a first station configured to signal a set of indicators via a plurality of antennas to a second station from which the precoding codebook is derived at the second station based on the signaled set of indicators, the set of indicators including less information than the precoding codebook,
- wherein the set of indicators includes a sub-set of complex elements of the precoding codebook, wherein the complex elements of the sub-set are dependent upon each other,
- wherein a first antenna of the plurality of antennas is assigned a first antenna weight and a subsequent antenna is assigned a second weight, the second weight being a function of the first antenna weight and an antenna weight of a preceding antenna.
A system for transmitting a precoding codebook over an air interface, the system comprising:
- a first station configured to signal a set of indicators via a plurality of antennas to a second station from which the precoding codebook is derived at the second station based on the signaled set of indicators, the set of indicators including less information than the precoding codebook,
- wherein the set of indicators includes a sub-set of complex elements of the precoding codebook, wherein the complex elements of the sub-set are dependent upon each other,
- the set of indicators including a base phase for one of the plurality of antennas and an offset phase for other antennas of the plurality of antennas.
A method for transmitting a precoding codebook over an air interface from a first station, the system comprising:
- signaling a set of indicators from the first station via a plurality of antennas to a second station from which the precoding codebook is derived at the second station based on the signaled set of indicators, the set of indicators including less information than the precoding codebook,
- wherein the set of indicators includes a sub-set of complex elements of the precoding codebook, wherein the complex elements of the sub-set are dependent upon each other,
- wherein a first antenna of the plurality of antennas is assigned a first antenna weight and a subsequent antenna is assigned a second weight, the second weight being a function of the first antenna weight and an antenna weight of a preceding antenna.
A method for transmitting a precoding codebook over an air interface from a first station, the system comprising:
- signaling a set of indicators from the first station via a plurality of antennas to a second station from which the precoding codebook is derived at the second station based on the signaled set of indicators, the set of indicators including less information than the precoding codebook,
- wherein the set of indicators includes a sub-set of complex elements of the precoding codebook, wherein the complex elements of the sub-set are dependent upon each other,
- the set of indicators including a base phase for one of the plurality of antennas and an offset phase for other antennas of the plurality of antennas.
Dependencies are inferred from the claim text.