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Performance of MIMO systems with channel inversion

: Haustein, T.; Helmolt, C. von; Jorswieck, E.; Jungnickel, V.; Pohl, V.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE 55th Vehicular Technology Conference, VTC Spring 2002. Vol.1 : May 6 - 9, 2002, Birmingham, Alabama
Piscataway: IEEE Operations Center, 2002
ISBN: 0-7803-7484-3
Vehicular Technology Conference (VTC) <55, 2002, Birmingham>
Fraunhofer HHI ()
cochannel interference; data communication; equalisers; mimo systems; packet radio networks; radio transmitters; channel inversion; spatial equalization technique; channel state information; transmitter; high data rate applications; performance degradation; channel estimation errors; clipping; transmitted power; co-channel interference

The paper discusses channel inversion which is a spatial equalization technique when channel state information is available at the transmitter. Channel inversion is a straightforward concept without iterations and it might be useful when the data transmission is critical with time e.g. high data rate applications. We discuss performance degradation caused by channel estimation errors, clipping due to the limited range of the transmitted power and the effect of cochannel interference. These results give an insight into the technical constraints of this transmission technique and show how these critical issues can be limited or reduced.