Capacity Bounds of MIMO Channels with Asymmetric Channel State Information at Transmitter

被引:3
作者
Liu, An [1 ]
Huang, Xinming [2 ]
Liu, Youjian [3 ]
Xiang, Haige [1 ]
Luo, Wu [1 ]
机构
[1] Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Sch EECS, Beijing, Peoples R China
[2] Worcester Polytech Inst, Dept Elect & Comp Engn, Worcester, MA USA
[3] Univ Colorado, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA
基金
美国国家科学基金会;
关键词
Capacity; MIMO channels; asymmetric channel state information at transmitter;
D O I
10.1109/LCOMM.2009.090991
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
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.
引用
收藏
页码:564 / 566
页数:3
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