Both transmit/receive diversity and transmit spatial multiplexing are categorized into the space-time coding techniques, which does not necessarily require the channel knowledge at the transmitter.
Mõlemad, nii edastamise/vastuvõtmise mitmekesisus ja ruumiline multipleksimine on jaotatud aegruumi kodeerimise tehnoloogiateks, mis ei nõua tingimata saatjal kanali tundmist.