| http://www.w3.org/ns/prov#value | - Among these options are optional support for STBC, adaptive beam forming (AAS), and various forms of MIMO and SDMA. A feedback channel referred to as Uplink Channel Sounding (ULCS) is provided in the OFDMA framing structure to support the feedback paths that mechanisms such as AAS and SDMA require [Benko06].
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