State prediction process and methodology
A system and method for optimizing the performance for MIMO are provided, the system including multiple antennas, including at least one modal antenna, wherein each of the at least one modal antenna has multiple modes corresponding to multiple radiation patterns, and a processor coupled to the multiple antennas and configured to select a mode among the multiple modes to optimize signal quality for each time interval based on a CQI by considering envelop correlation effects.
1. A method for operating a multiple input multiple output communication system comprising a first modal antenna and a second modal antenna, the first modal antenna and the second modal antenna each configurable in a plurality of modes, each of the plurality of modes having a distinct radiation pattern, the method comprising:
configuring, by one or more processors, the first modal antenna and the second modal antenna in one of the plurality of modes;
determining, by the one or more processors, a channel quality indicator improvement associated with reconfiguring the first modal antenna and the second modal antenna in a different mode of the plurality of modes;
determining, by the one or more processors, whether to reconfigure the first modal antenna and the second modal antenna in the different mode based, at least in part, on the channel quality indicator improvement; and
responsive to determining to reconfigure the first modal antenna in the different mode and the second modal antenna in the different mode, providing, by the one or more processors, one or more control signals associated with reconfiguring the first modal antenna in the different mode and the second modal antenna in the different mode.
2. The method of claim 1 , wherein determining a channel quality indicator improvement comprises:
determining, by the one or more processors, a first channel quality indicator improvement associated with reconfiguring the first modal antenna in the different mode of the plurality of modes; and
determining, by the one or more processors, a second channel quality indicator improvement associated with reconfiguring the second modal antenna in the different mode of the plurality of modes.
3. The method of claim 2 , wherein:
the different mode for the first modal antenna comprises a first mode of the plurality of modes; and
the different mode for the second modal antenna comprises a second mode of the plurality of modes.
4. The method of claim 2 , wherein:
the different mode for the first modal antenna comprises a first mode of the plurality of modes; and
the different mode for the second modal antenna comprises the first mode of the plurality of modes.
5. The method of claim 2 , wherein determining whether to reconfigure the first modal antenna and the second modal antenna in the different mode comprises:
obtaining, by the one or more processors, data indicative of an envelope correlation coefficient between the different mode for the first modal antenna and the different mode for the second modal antenna; and
determining, by the one or more processors, whether to reconfigure the first modal antenna and the second modal antenna in the different mode based, at least in part, on the first channel quality indicator improvement, the second channel quality indicator improvement, and the envelope correlation coefficient.
6. The method of claim 5 , wherein determining, whether to reconfigure the first modal antenna and the second modal antenna in the different mode based, at least in part on the first channel quality indicator improvement, the second channel quality indicator improvement, and the envelope correlation coefficient comprises:
adding, by the one or more processors, the first channel quality indicator improvement, the second channel quality indicator improvement and the envelope correlation coefficient together to obtain a total channel quality indicator improvement; and
comparing, by the one or more processors, the total channel quality indicator improvement to a threshold value to determine whether to reconfigure the first modal antenna ad the second modal antenna in the different mode.
7. The method of claim 6 , wherein providing the one or more control signals associated with reconfiguring the first modal antenna and the second modal antenna in the different mode comprises:
responsive to determining the total channel quality indicator improvement is greater than the threshold value, providing, by the one or more processors, the one or more control signals associated with reconfiguring the first modal antenna and the second modal antenna in the different mode.
8. The method of claim 1 , wherein the first modal antenna and the second modal antenna each comprise a receive (Rx) modal antenna.
9. The method of claim 1 , wherein the first modal antenna and the second modal antenna each comprise a transmit (Tx) modal antenna.
10. The method of claim 1 , wherein configuring the first modal antenna and the second modal antenna in one of the plurality of modes comprises:
configuring, by the one or more processors, the first modal antenna in a first mode of the plurality of modes; and
configuring, by the one or more processors, the second modal antenna in a second mode of the plurality of modes.
11. The method of claim 1 , wherein configuring the first modal antenna and the second modal antenna in one of the plurality of modes comprises:
configuring, by the one or more processors, the first modal antenna and the second modal antenna in a first mode of the plurality of modes.
12. A communication system comprising:
a plurality of modal antennas, each of the plurality of modal antennas operable in a plurality of modes, each of the plurality of modes associated with a distinct radiation pattern; and
one or more processors configured to:
configure a first modal antenna of the plurality of modal antennas in one of the plurality of modes and a second modal antenna of the plurality of modal antennas in one of the plurality of modes;
determine a channel quality indicator improvement associated with reconfiguring the first modal antenna and the second modal antenna in a different mode of the plurality of modes;
determine whether to reconfigure the first modal antenna and the second modal antenna in the different mode based, at least in part, on the channel quality indicator improvement; and
in response to determining to reconfigure the first modal antenna and the second modal antenna in the different mode, provide one or more control signals associated with reconfiguring the first modal antenna in the different mode and the second modal antenna in the different mode.
13. The communication system of claim 12 , wherein the channel quality indicator improvement comprises:
a first channel quality indicator improvement associated with reconfiguring the first modal antenna in the different mode; and
a second channel quality indicator improvement associated with reconfiguring the second modal antenna in the different mode.
14. The communication system of claim 13 , wherein:
the different mode for the first modal antenna comprises a first mode of the plurality of modes; and
the different mode for the second modal antenna comprises a second mode of the plurality of modes.
15. The communication system of claim 13 , wherein the one or more processors are further configured to:
obtain data indicative of an envelope correlation coefficient between the different mode for the first modal antenna and the different mode for the second modal antenna; and
determine whether to reconfigure the first modal antenna and the second modal antenna based, at least in part, on the first channel quality indicator improvement, the second channel quality indicator improvement, and the envelope correlation coefficient.
16. The communication system of claim 12 , wherein each of the plurality of modal antennas comprises a receive (Rx) modal antenna.
17. The communication system of claim 12 , wherein each of the plurality of modal antennas comprises a transmit (Tx) modal antenna.