Generalized co-phasing for multiple transmitting and receiving antennas
AssigneeMarvell International Ltd.
InventorsJungwon Lee, Rohit U. Nabar, Jihwan P. Choi, Hui-Ling Lou
Life of this patent
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Abstract
A method for determining a phase of each of a plurality of transmitting antennas in a multiple input and multiple output (MIMO) communication system includes: calculating, for first and second ones of the plurality of transmitting antennas, a value based on first and second groups of channel gains, the first group including channel gains between the first transmitting antenna and each of a plurality of receiving antennas, the second group including channel gains between the second transmitting antenna and each of the plurality of receiving antennas; and determining the phase of each of the plurality of transmitting antennas based on at least the value.
Claims40
A method for determining a phase of each of a plurality of transmitting antennas in a multiple input and multiple output (MIMO) communication system, comprising:
- calculating, for first and second ones of the plurality of transmitting antennas, a value based on first and second groups of channel gains, the first group including channel gains between the first transmitting antenna and each of a plurality of receiving antennas, the second group including channel gains between the second transmitting antenna and each of the plurality of receiving antennas;
- and
- determining the phase of each of the plurality of transmitting antennas based on at least the value, wherein the phase of each of the plurality of transmitting antennas is determined independently from a transmitting power of a respective one of the plurality of transmitting antennas.
A method for determining an adjustment phase for each of a plurality of data signals to be respectively transmitted by a plurality of transmitting antennas in a multiple input and multiple output (MIMO) communication system, comprising:
- calculating, for first and second ones of the plurality of transmitting antennas, a value based on first and second groups of channel gains, the first group including channel gains between the first transmitting antenna and each of a plurality of receiving antennas, the second group including channel gains between the second transmitting antenna and each of the plurality of receiving antennas;
- and
- determining the adjustment phase for each of the plurality of data signals to be transmitted based on at least the value, wherein the adjustment phase for each of the plurality of data signals is determined independently from a transmitting power of a respective one of the plurality of transmitting antennas.
An apparatus for determining a phase of each of a plurality of transmitting antennas in a multiple input and multiple output (MIMO) communication system, comprising:
- means for calculating, for first and second ones of the plurality of transmitting antennas, a value based on first and second groups of channel gains, the first group including channel gains between the first transmitting antenna and each of a plurality of receiving antennas, the second group including channel gains between the second transmitting antenna and each of the plurality of receiving antennas;
- and
- means for determining the phase of each of the plurality of transmitting antennas based on at least the value, wherein the phase of each of the plurality of transmitting antennas is determined independently from a transmitting power of a respective one of the plurality of transmitting antennas.
A communication system comprising:
- a plurality of transmitting antennas, each of the transmitting antennas being configured to transmit a data signal, and to adjust a phase of the data signal by an adjustment phase;
- and
- a plurality of receiving antennas each configured to receive data signals respectively transmitted by the transmitting antennas;
- wherein
- the adjustment phase of each of the transmitting antennas is determined based on at least a value calculated for first and second ones of the plurality of transmitting antennas, the value being calculated based on first and second groups of channel gains, the first group including channel gains between the first transmitting antenna and each of the plurality of receiving antennas, the second group including channel gains between the second transmitting antenna and each of the plurality of receiving antennas, and
- the adjustment phase of each of the transmitting antennas is determined independently from a transmitting power of respective one of the transmitting antennas.
Dependencies are inferred from the claim text.