TY - JOUR
T1 - Capacity bounds of MIMO channels with asymmetric channel state information at transmitter
AU - Liu, An
AU - Huang, Xinming
AU - Liu, Youjian
AU - Xiang, Haige
AU - Luo, Wu
PY - 2009
Y1 - 2009
N2 - Using two receive antennas at a mobile phone improves downlink performance. But because of the correlation of the two antennas, using one of them to transmit in the uplink is a good performance-complexity tradeoff. This creates an interesting scenario of asymmetric channel state information at the transmitter in a time division duplex system, where the downlink channel coefficients related to one of the two receive antennas can be learned by the base station from the uplink training due to reciprocity. We provide near optimal transmitter design by obtaining upper and lower bounds of the downlink ergodic capacity.
AB - Using two receive antennas at a mobile phone improves downlink performance. But because of the correlation of the two antennas, using one of them to transmit in the uplink is a good performance-complexity tradeoff. This creates an interesting scenario of asymmetric channel state information at the transmitter in a time division duplex system, where the downlink channel coefficients related to one of the two receive antennas can be learned by the base station from the uplink training due to reciprocity. We provide near optimal transmitter design by obtaining upper and lower bounds of the downlink ergodic capacity.
KW - Asymmetric channel state information at transmitter
KW - Capacity
KW - MIMO channels
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000269008400002
UR - https://openalex.org/W2127302259
UR - https://www.scopus.com/pages/publications/69649092076
U2 - 10.1109/LCOMM.2009.090991
DO - 10.1109/LCOMM.2009.090991
M3 - Journal Article
SN - 1089-7798
VL - 13
SP - 564
EP - 566
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 8
ER -