Beam and power allocation method for MIMO communication system
First Claim
1. A beam and power allocation method for a MIMO system transmitting multiple data streams from a transmitter having a plurality of transmit antennas to a receiver having at least two receive antennas, the transmit antennas being grouped based on feedback information from the receiver, comprising:
- obtaining precoding information for each transmit antenna group; and
allocating beam and power to the transmit antenna groups according to the precoding information of the respective antenna groups.
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Accused Products
Abstract
A beam and power allocation method for a MIMO system transmitting multiple data streams from a transmitter having a plurality of transmit antennas to a receiver having at least two receive antennas, the transmit antennas being grouped based on feedback information from the receiver, includes obtaining covariance matrices for respective transmit antenna group, and allocating beam and power to the transmit antenna groups according to the covariance matrices of the respective antenna groups. The power allocation method can be adapted to various partial beamforming techniques by generalizing the optimization problem as a function of transmit covariance matrices.
98 Citations
11 Claims
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1. A beam and power allocation method for a MIMO system transmitting multiple data streams from a transmitter having a plurality of transmit antennas to a receiver having at least two receive antennas, the transmit antennas being grouped based on feedback information from the receiver, comprising:
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obtaining precoding information for each transmit antenna group; and
allocating beam and power to the transmit antenna groups according to the precoding information of the respective antenna groups. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power allocation method for a MIMO system transmitting multiple data streams from a transmitter having a plurality of transmit antennas to a receiver having at least two receive antennas, the transmit antennas being grouped based on feedback information from the receiver, comprising:
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obtaining covariance matrices for the transmit antennas using iterative water-filling with sum power constraint;
allocating power to the transmit antennas based on the covariance matrices. - View Dependent Claims (9, 10, 11)
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Specification