A Novel Architecture for MIMO Spatio-Temporal Channel Sounder

Kei SAKAGUCHI  Jun-ichi TAKADA  Kiyomichi ARAKI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E85-C   No.3   pp.436-441
Publication Date: 2002/03/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Signals, Systems and Electronics Technology)
Category: Digital Transmission
Keyword: 
mobile propagation,  channel sounder,  MIMO channel response,  channel parameter estimation,  hardware implementation,  

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Summary: 
Implementation of Multi-Input Multi-Output (MIMO) channel sounder is considered, taking hardware cost and realtime measurement into account. A remarkable difference between MIMO and conventional Single-Input Multi-Output (SIMO) channel sounding is that the MIMO sounder needs some kind of multiplexing to distinguish transmitting antennas. We compared three types of multiplexing TDM, FDM, and CDM for the sounding purpose, then we chose FDM based technique to achieve cost effectiveness and realtime measurement. In the framework of FDM, we have proposed an algorithm to estimate MIMO channel parameters. Furthermore the proposed algorithm was implemented into the hardware, and the validity of the proposed algorithm was evaluated through measurements in an anechoic chamber.