System and method for DIDO precoding interpolation in multicarrier systems
First Claim
1. A machine-implemented method for performing precoding interpolation in a multicarrier multiuser (MU) multiple antenna system (MU-MAS) which employs precoding to communicate between a plurality of distributed antennas and a plurality of client devices comprising:
- selecting a first subset of subcarriers to determine a first subset of precoding weights;
deriving a second subset of precoding weights for a second subset of subcarriers by interpolating between the first subset of precoding weights; and
using a combination of the first subset of precoding weights and the second subset of precoding weights to precode a data stream prior to transmitting the data stream to a client device.
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Abstract
A system and machine-implemented method are described for performing precoding interpolation in a DIDO system which employs orthogonal frequency-division multiplexing (OFDM) and DIDO precoding to communicate with a plurality of distributed-input-distributed-output (DIDO) clients. For example, a system according to one embodiment of the invention comprises: selecting a first subset of ODFM tones to determine a first subset of precoding weights; deriving a second subset of precoding weights for a second subset of ODFM tones by interpolating between the first subset of precoding weights; and using a combination of the first subset of precoding weights and the second subset of precoding weights to precode a data stream prior to transmitting the data stream to a DIDO client.
116 Citations
11 Claims
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1. A machine-implemented method for performing precoding interpolation in a multicarrier multiuser (MU) multiple antenna system (MU-MAS) which employs precoding to communicate between a plurality of distributed antennas and a plurality of client devices comprising:
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selecting a first subset of subcarriers to determine a first subset of precoding weights; deriving a second subset of precoding weights for a second subset of subcarriers by interpolating between the first subset of precoding weights; and using a combination of the first subset of precoding weights and the second subset of precoding weights to precode a data stream prior to transmitting the data stream to a client device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification