Antenna array weight vector selection techniques for 60 GHz MIMO communications
View Patent ↗Various embodiments may be generally directed to antenna array weight vector selection techniques for 60 GHz multiple-input multiple-output (MIMO) communications. In some embodiments, using one or more such techniques, a 60 GHz-capable transmitting device may select respective antenna array weight vectors for two or more transmit antenna arrays, and a 60 GHz-capable receiving device may select respective antenna array weight vectors for two or more receive antenna arrays. In various embodiments, in order to obtain information for use in selecting such antenna array weight vectors, the transmitter and receiver may utilize one or more existing beamforming training algorithms defined for 60 GHz single-input single-output (SISO) communications. In some embodiments, for example, the transmitter and receiver may utilize one or more beamforming training algorithms defined in IEEE 802.11ad-2012. The embodiments are not limited in this context.
1. An apparatus, comprising:
a memory; and
logic, at least a portion of which is comprised in circuitry coupled to the memory, the logic to:
identify a preferred single-input single-output (SISO) antenna array weight vector (AWV) set for a wireless communication device comprising a first transmit (TX) antenna array and a second TX antenna array, the preferred SISO AWV set to comprise:
a preferred AWV v 11 with respect to SISO transmission by the first TX antenna array to a first receive (RX) antenna array of the remote device;
a preferred AWV v 12 with respect to SISO transmission by the first TX antenna array to a second RX antenna array of the remote device;
a preferred AWV v 21 with respect to SISO transmission by the second TX antenna array to the first RX antenna array of the remote device; and
a preferred AWV v 22 with respect to SISO transmission by the second TX antenna array to the second RX antenna array of the remote device; and
determine a preferred multiple-input multiple-output (MIMO) AWV pair for the wireless communication device based on the preferred SISO AWV set according to a MIMO AWV selection procedure, the preferred MIMO AWV pair to comprise:
a first MIMO AWV comprising an AWV for application to the first TX antenna array in conjunction with a MIMO transmission to a remote device and;
a second MIMO AWV comprising an AWV for application to the second TX antenna array in conjunction with the MIMO transmission to the remote device.
2. The apparatus of claim 1 , the MIMO AWV selection procedure to comprise:
selecting v 11 as the first MIMO AWV and v 22 as the second MIMO AWV; or
selecting v 12 as the first MIMO AWV and v 21 as the second MIMO AWV.
3. The apparatus of claim 1 , the MIMO AWV selection procedure to comprise optimizing channel capacity for communications between the wireless communication device and the remote device according to an interference nulling technique.
4. The apparatus of claim 1 , the MIMO AWV selection procedure to comprise:
identifying a preferred channel between the wireless communication device and the remote device; and
iteratively maximizing a capacity of a flat fading channel based on the preferred channel.
5. The apparatus of claim 1 , the logic to identify the preferred SISO AWV set by engaging in one or more beamforming training procedures.
6. A system, comprising:
the apparatus of claim 1 ; and
at least one radio frequency (RF) transceiver.
7. At least one non-transitory computer-readable storage medium comprising a set of instructions that, in response to being executed on a computing device, cause the computing device to:
identify a preferred single-input single-output (SISO) antenna array weight vector (AWV) set for a wireless communication device comprising a first transmit (TX) antenna array and a second TX antenna array, the preferred SISO AWV set to comprise:
a preferred AWV v 11 with respect to SISO transmission by the first TX antenna array to a first receive (RX) antenna array of the remote device;
a preferred AWV v 12 with respect to SISO transmission by the first TX antenna array to a second RX antenna array of the remote device;
a preferred AWV v 21 with respect to SISO transmission by the second TX antenna array to the first RX antenna array of the remote device; and
a preferred AWV v 22 with respect to SISO transmission by the second TX antenna array to the second RX antenna array of the remote device; and
determine a preferred multiple-input multiple-output (MIMO) AWV pair for the wireless communication device based on the preferred SISO AWV set according to a MIMO AWV selection procedure, the preferred MIMO AWV pair to comprise:
a first MIMO AWV comprising an AWV for application to the first TX antenna array in conjunction with a MIMO transmission to a remote device and;
a second MIMO AWV comprising an AWV for application to the second TX antenna array in conjunction with the MIMO transmission to the remote device.
8. The at least one non-transitory computer-readable storage medium of claim 7 , the MIMO AWV selection procedure to comprise:
selecting v 11 as the first MIMO AWV and v 22 as the second MIMO AWV; or
selecting v 12 as the first MIMO AWV and v 21 as the second MIMO AWV.
9. The at least one non-transitory computer-readable storage medium of claim 7 , the MIMO AWV selection procedure to comprise optimizing channel capacity for communications between the wireless communication device and the remote device according to an interference nulling technique.
10. The at least one non-transitory computer-readable storage medium of claim 7 , the MIMO AWV selection procedure to comprise:
identifying a preferred channel between the wireless communication device and the remote device; and
iteratively maximizing a capacity of a flat fading channel based on the preferred channel.
11. The at least one non-transitory computer-readable storage medium of claim 7 , comprising instructions that, in response to being executed on the computing device, cause the computing device to identify the preferred SISO AWV set by engaging in one or more beamforming training procedures.