<Dl> <Dt> January 19, 2006 </Dt> <Dd> The IEEE 802.11 n Task Group approved the Joint Proposal's specification, enhanced by EWC's draft specification . </Dd> </Dl> <Dt> January 19, 2006 </Dt> <Dd> The IEEE 802.11 n Task Group approved the Joint Proposal's specification, enhanced by EWC's draft specification . </Dd> <Dl> <Dt> March 2006 </Dt> <Dd> IEEE 802.11 Working Group sent the 802.11 n draft to its first letter ballot, allowing the 500 + 802.11 voters to review the document and suggest bug fixes, changes, and improvements . </Dd> </Dl>

Mimo 802.11n devices use precoding and postcoding techniques like