Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization
First Claim
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1. A method of generating a multicarrier communication signal comprising normalizing beamforming matrices based on an average subcarrier power loading for each of a plurality of transmit antennas.
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Abstract
In a multi-antenna, multicarrier transmitter, a multicarrier communication signal is generated by normalizing beamforming matrices based on an average subcarrier power loading for each of the transmit antennas. One or more spatial streams may be transmitted by two or more antennas.
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Citations
35 Claims
- 1. A method of generating a multicarrier communication signal comprising normalizing beamforming matrices based on an average subcarrier power loading for each of a plurality of transmit antennas.
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14. A multicarrier transmitter comprising:
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a normalizer to normalize beamforming matrices based on an average subcarrier power loading for each of a plurality of transmit antennas; and
beamformers to apply elements of normalized beamforming matrices to frequency-domain symbol-modulated subcarriers of a multicarrier communication signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A multicarrier communication system comprising:
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a multicarrier transmitting station having a normalizer to normalize beamforming matrices based on an average subcarrier power loading for each of a plurality of transmit antennas, and beamformers to apply elements of normalized beamforming matrices to frequency-domain symbol-modulated subcarriers of a multicarrier communication signal; and
a multicarrier receiving station to receive the multicarrier communication signal through a channel from the transmitting station, the channel having characteristics of a channel matrix associated with the beamforming matrices, wherein the multicarrier receiving station applies a processing algorithm to detect one or more spatial streams. - View Dependent Claims (28, 29)
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30. A system comprising:
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two or more substantially omnidirectional antennas for transmitting a multicarrier communication signal; and
a multicarrier transmitter comprising a normalizer and beamformers, wherein the normalizer normalizes beamforming matrices based on an average subcarrier power loading for each of the transmit antennas, wherein the beamformers apply elements of normalized beamforming matrices to frequency-domain symbol-modulated subcarriers of the multicarrier communication signal. - View Dependent Claims (31, 32)
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- 33. A machine-accessible medium that provides instructions, which when accessed, cause a machine to generate a multicarrier communication signal by normalizing beamforming matrices based on an average subcarrier power loading for each of a plurality of transmit antennas.
Specification