Title :
Linear precoding for MIMO transmission with partial CSIT
Author :
De Francisco, Ruben ; Slock, Dirk T M
Author_Institution :
Inst. Eurecom, Sophia Antipolis, France
Abstract :
We have previously introduced linear precoding schemes for spatial multiplexing, based on spatial spreading and delay diversity. These schemes were designed for the case of absence of channel state information at the Transmitter (CSIT) (whereas at the receiver the coherent case of full CSIR is assumed). These spatiotemporal spreading schemes have been shown to allow to attain the optimal rate-diversity trade-off at high SNR. On the other hand, the capacity achieving solution for the case of full CSIT is based on spatial prefiltering with water filling on the streams. Extensions of this scheme have been proposed recently for the case of partial CSIT, but like the full CSIT schemes, they do not take advantage of maximal diversity. In this paper a combination of the solutions described above for no and full CSIT is proposed for the general case of partial CSIT, exploiting diversity sources in all cases of CSIT.
Keywords :
MIMO systems; channel capacity; delays; diversity reception; filtering theory; linear antenna arrays; linear codes; multiplexing; precoding; radio transmitters; spatial filters; spatiotemporal phenomena; CSIT; MIMO transmission; capacity achieving solution; delay diversity; linear precoding; optimal rate-diversity trade-off; partial CSIT; spatial multiplexing; spatial prefiltering; spatiotemporal spreading scheme; transmitter channel state information; water filling scheme; Antennas and propagation; Channel state information; Delay; Filling; Linear approximation; MIMO; Receiving antennas; Spatiotemporal phenomena; Transmitting antennas; Wireless communication;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
DOI :
10.1109/SPAWC.2005.1506222