To provide wireless multimedia applications future generation
wireless local area networks (WLAN) have to support much higher
data rates (200 MBit/s up to 1 GBit/s) at high link reliability.
Furthermore, the gap between ''wired'' and ''wireless'' LANs
should be decreased. Recent research results show that the use
of multiple antennas at the wireless nodes (multiple-input
multiple-output, MIMO) in combination with and space-time signal
processing allows to incerase the data rate and/or to improve
the link reliability without additional costs in bandwidth or
power. Moreover, multiple antennas allow enhancements to the
existing IEEE 802.11 technology which are standard compliant and
improve coverage and link quality. Today existing wireless local
area networks (WLAN) support data rates from 11 MBit/s (IEEE
802.11b) to 54 MBit/s (IEEE 802.11a/g). The focus of this
project is to enhance the IEEE 802.11.a technology especially by
the use of multiple antenna arrays and to develop new concepts
for future high-speed w