Method and system for rate selection algorithm to maximize throughput in close loop multiple input multiple output (MIMO) wireless local area network (WLAN) system
First Claim
1. A method for communicating information, the method comprising:
- in a wireless device operable to perform closed loop multiple-input-multiple-output (MIMO) communication;
determining a geometric mean signal-to-noise ratio (SNR) value for each of a plurality of downlink radio frequency (RF) channels based on a plurality of tones corresponding to each of the plurality of downlink RF channels;
selecting a modulation technique and a coding rate for each of the plurality of downlink RF channels based on the corresponding geometric mean SNR value; and
communicating, via one or more uplink RF channels, feedback information comprising the selected modulation technique and the selected coding rate for each of the plurality of downlink RF channels.
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Abstract
Aspects of a method and system for rate selection algorithm to maximize throughput in closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system are provided and may comprise computing a maximum number of binary bits to be simultaneously transmitted via an RF channel based on signal quality. A modulation technique may be selected based on the computed maximum, communicating feedback information comprising the selected modulation technique. Subsequently transmitted data may be received via an RF channel which is modulated based on the feedback information. Another aspect of the method may comprise receiving feedback information comprising at least one of a selected modulation technique and coding rate via an RF channel, and transmitting subsequent data via said at least one of a plurality of RF channels which either modulated, or coded, based on the feedback information.
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Citations
22 Claims
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1. A method for communicating information, the method comprising:
in a wireless device operable to perform closed loop multiple-input-multiple-output (MIMO) communication; determining a geometric mean signal-to-noise ratio (SNR) value for each of a plurality of downlink radio frequency (RF) channels based on a plurality of tones corresponding to each of the plurality of downlink RF channels; selecting a modulation technique and a coding rate for each of the plurality of downlink RF channels based on the corresponding geometric mean SNR value; and communicating, via one or more uplink RF channels, feedback information comprising the selected modulation technique and the selected coding rate for each of the plurality of downlink RF channels. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for communicating information, the system comprising:
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one or more circuits for use in a wireless device that is operable for closed loop multiple-input multiple-output (MIMO) communication, the one or more circuits being operable to; determine a geometric mean signal-to-noise ratio (SNR) value for each of a plurality of downlink radio frequency (RF) channels based on a plurality of tones corresponding to each of the plurality of downlink RF channels; select a modulation technique and a coding rate for each of the plurality of downlink RF channels based on the corresponding geometric mean SNR value; and communicate, via one or more uplink RF channels, feedback information comprising the selected modulation technique and the selected coding rate for each of the plurality of downlink RF channels. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for communicating information, the method comprising:
in a wireless device operable to perform closed loop multiple-input-multiple-output (MIMO) communication; receiving a geometric mean signal-to-noise ratio (SNR) value for each of a plurality of downlink radio frequency (RF) channels based on a plurality of tones corresponding to each of the plurality of downlink RF channels; selecting a modulation technique and a coding rate for each of the plurality of downlink RF channels based on the corresponding geometric mean SNR value; and transmitting, via the plurality of downlink RF channels, data based on the selected modulation technique and the selected coding rate for each of the plurality of downlink RF channels. - View Dependent Claims (16, 17, 18)
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19. A system for communicating information, the system comprising:
one or more circuits for use in a wireless device operable to perform closed loop multiple-input-multiple-output (MIMO) communication, the one or more circuits being operable to; receive a geometric mean signal-to-noise ratio (SNR) value for each of a plurality of downlink radio frequency (RF) channels based on a plurality of tones corresponding to each of the plurality of downlink RF channels; select a modulation technique and a coding rate for each of the plurality of downlink RF channels based on the corresponding geometric mean SNR value; and transmit, via the plurality of downlink RF channels, data based on the selected modulation technique and the selected coding rate for each of the plurality of downlink RF channels. - View Dependent Claims (20, 21, 22)
Specification