DocumentCode :
3162288
Title :
A novel link adaptive transmission scheme in higher-order MIMO systems
Author :
Hu, Minxia ; Jin, Shi ; Gao, Xiqi
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
fYear :
2011
fDate :
11-14 Sept. 2011
Firstpage :
1621
Lastpage :
1625
Abstract :
This paper proposes a novel cascaded precoding scheme at the base station to adapt to both long-term and short-term channel variations in higher-order MIMO systems which are supported in 3GPP LTE-Advanced. The proposed precoding scheme includes a long-term precoding followed by a short-term precoding, where the former bases on the channel statistical eigenmodes, adapting to the long-term channel variations and the latter bases on the LTE Rel. 8 codebook, adapting to the short-term channel variations. Simulation results show that the proposed scheme can achieve a high spectral efficiency while guaranteeing a given codeword error ratio target. And when compared with the precoding scheme using the codebook for LTE-Advanced which is finally fixed recently in one of the 3GPP´s proposals, the proposed scheme has a comparable performance but a reduced complexity due to the codebook size and long-term feedback interval.
Keywords :
3G mobile communication; Long Term Evolution; MIMO communication; 3GPP LTE-Advanced; cascaded preceding scheme; higher-order MIMO systems; link adaptive transmission scheme; short-term channel variations; Channel estimation; Correlation; Feeds; MIMO; Phase shift keying; Signal to noise ratio; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2011 IEEE 22nd International Symposium on
Conference_Location :
Toronto, ON
ISSN :
pending
Print_ISBN :
978-1-4577-1346-0
Electronic_ISBN :
pending
Type :
conf
DOI :
10.1109/PIMRC.2011.6139778
Filename :
6139778
Link To Document :
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