Geng, Jian and Wang, Yafeng and Huang, Fan and Xiang, Wei and Yang, Dacheng (2011) Analysis on the impact of antenna gain mismatch on precoding vector. In: 2011 IEEE Wireless Communications and Networking Conference (WCNC 2011), 28-31 Mar 2011, Cancun, Mexico.
Antenna gain mismatch between transmitter and receiver circuits has been regarded as an obstacle for exploiting channel reciprocity between uplink and downlink channels in time-division duplex (TDD) multiple-input multiple-output (MIMO) systems. To the best knowledge of the authors, little work to date has been on about the impact of antenna mismatches on the precoding vector. Motivated by this fact, this paper investigates some characteristics of downlink precoding in the presence of non-ideal antenna gains. Specifically, properties about inter-MS interference when mismatches exist at the base station (BS) side are presented as well as the perturbation of non-normalized precoding vector caused by mismatches at the mobile station (MS) side under two kinds of linear precoding algorithms. These properties are mostly irrelevant to specific distributions of antenna mismatch parameters and can help to provide a deeper insight into the antenna gain mismatch problem and the corresponding calibration.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Permanent restricted access to published version due to publisher copyright policy.|
|Uncontrolled Keywords:||BS; MIMO; MS; TDD; antenna gain mismatch; base station; downlink channel; interMS interference; linear precoding vector algorithm; mobile station; receiver circuit; time-division duplex multiple-input multiple-output system; transmitter circuit; uplink channel|
|Depositing User:||Dr Wei Xiang|
|Date Deposited:||26 Mar 2012 04:46|
|Last Modified:||03 Jul 2013 01:06|
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