Six transmit antenna codebook design
AssigneeTexas Instruments Incorporated
InventorsEko Onggosanusi, Runhua Chen
Life of this patent
Estimating the term…
Abstract
A method of wireless data transmission includes a base station having six antennas and at least one user equipment. The base station forms at least one layer of data stream including modulated symbols, precodes the at least one layer of data stream via multiplication with consecutive first and second precoding matrices and transmit the precoded data stream to the at least one user equipment via the six antennas. The first precoding matrix W1 is a block diagonal matrix formed by two identical 3 by Nb matrices, where Nb is the number of distinct Discrete Fourier Transform vectors. The second precoding matrix W2 introduces a phase shift between the two 3 by Nb matrices and selects a column subset from the first precoding matrix.
Claims12
A method of wireless data transmission from a base station having six antennas to at least one user equipment, comprising the steps of:
- forming at least one layer of data stream including modulated symbols;
- precoding the at least one layer of data stream via multiplication with consecutive first and second precoding matrices;
- and
- transmitting the precoded data stream via the six antennas to the at least one user equipment.
A wireless data transmission system comprising:
- a base station having six antennas operable to
- form at least one layer of data stream including modulated symbols,
- precode the at least one layer of data stream via multiplication with consecutive first and second precoding matrices, and
- transmit the precoded data stream via six antennas;
- and
- at least one user equipment operable to receive the transmitted precoded data streams.
A wireless data transmission system comprising:
- a base station having six antennas operable to
- form at least one layer of data stream including modulated symbols,
- precode the at least one layer of data stream via multiplication with consecutive first and second precoding matrices, and
- transmit the precoded data stream via six antennas.
Dependencies are inferred from the claim text.