Hybrid MU-MIMO spatial mapping using both explicit sounding and crosstalk tracking in a wireless local area network
地域：
CA
CA San Jose
摘要
Systems and methods for a wireless station supporting wireless communications with an associated wireless access point (WAP) on a wireless local area network (WLAN) where the wireless station can include hardware processing circuitry to perform hybrid spatial mapping feedback operations for multi-user (MU) multiple-input multiple-output (MIMO) downlinks from the WAP to a group of associated stations. An exemplary implementation includes a channel estimation circuit to determine a communication channel responsive to an explicit sounding from the WAP, and to transmit channel sounding feedback to the WAP indicating the determined communication channel; and a crosstalk tracking circuit to determine an amount of crosstalk from portions of a downlink MU-MIMO communication packet targeted for other stations in the group of associated stations, and to transmit crosstalk feedback to the WAP as to the determined amount of crosstalk.
說明書
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In an embodiment of the invention the hybrid spatial mapping circuit may include a mix of both dedicated and programmable hardware circuit components. These embodiments of the invention may include a non-volatile memory 532 in which any one or all of: program code 534, precode matrices 536A, and pseudo inverse aggregate channel matrices may be stored. The program code operable on any such programmable portions of the hardware circuit to perform one or more of the discussed functions associated with either or both the explicit channel sounding and crosstalk damping circuits.
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