A Novel Transmit Scheme in CDM-Based MIMO Channel Sounding Systems

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The code division multiplexing (CDM)-based MIMO channel sounder architecture is efficient at measuring fast fading MIMO channels. This paper examines loosely synchronous (LS), CAZAC, Kasami, and Chaotic sequences as probing signals in the CDM architecture. After comparing the performance of the channel measurement among the sequences, it is concluded that the LS sequences are the most appropriate codes for the probing signals. However, because LS sequences have a significant drawback in that the number of transmit antennas is limited to less than 4, we propose using a hybrid architecture combining CDM with TDM for supporting a greater number of transmit antennas. The simulation results show that the proposed scheme can improve the measurement performance when more than 4 transmit antennas are used.
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Issue Date
2010-09
Language
English
Article Type
Article
Citation

IEICE TRANSACTIONS ON COMMUNICATIONS, v.E93B, no.9, pp.2428 - 2432

ISSN
0916-8516
URI
http://hdl.handle.net/10203/99815
Appears in Collection
EE-Journal Papers(저널논문)
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