Method and system for pre-equalization in a single weight spatial multiplexing MIMO system
First Claim
1. A method for processing signals in a communication system, the method comprising:
- receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station;
generating a plurality of vectors of baseband combined channel estimates based on phase rotation of said received plurality of spatially multiplexed communication signals;
generating a plurality of pre-equalization weights based on said generated plurality of vectors of baseband combined channel estimates;
modifying subsequently received spatially multiplexed communication signals based on a generated plurality of weights; and
feeding back at least a portion of said generated plurality of pre-equalization weights to said base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of said plurality of transmit antennas at said base station.
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Accused Products
Abstract
Certain aspects of the method may comprise receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of spatially multiplexed communication signals. A plurality of pre-equalization weights may be generated based on the generated plurality of vectors of baseband combined channel estimates. The received plurality of spatially multiplexed communication signals may be modified based on the generated plurality of pre-equalization weights. At least a portion of the generated plurality of pre-equalization weights may be fed back to the base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of the plurality of transmit antennas at the base station.
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Citations
20 Claims
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1. A method for processing signals in a communication system, the method comprising:
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receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station; generating a plurality of vectors of baseband combined channel estimates based on phase rotation of said received plurality of spatially multiplexed communication signals; generating a plurality of pre-equalization weights based on said generated plurality of vectors of baseband combined channel estimates; modifying subsequently received spatially multiplexed communication signals based on a generated plurality of weights; and feeding back at least a portion of said generated plurality of pre-equalization weights to said base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of said plurality of transmit antennas at said base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for processing signals in a communication system, the system comprising:
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a plurality of receive antennas that are operable to receive a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station; a channel estimator that is operable to generate a plurality of vectors of baseband combined channel estimates based on phase rotation of said received plurality of spatially multiplexed communication signals; at least one processor that is operable to generate a plurality of pre-equalization weights based on said generated plurality of vectors of baseband combined channel estimates; said at least one processor is operable to modify subsequently received spatially multiplexed communication signals based on a generated plurality of weights; and said at least one processor is operable to feed back at least a portion of said generated plurality of pre-equalization weights to said base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of said plurality of transmit antennas at said base station. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification