Measurement Based MIMO Channel Capacity in an Urban Canyon Environment at the 3.7 GHz Band

Jae-Woo LIM  Se-Woong KWON  Youn-Hyun PARK  Hyun-Goo YOON  Jong-Gwan YOOK  Yong-Joong YOON  

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.12   pp.4058-4061
Publication Date: 2008/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.12.4058
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
Keyword: 
MIMO,  capacity,  measurement,  

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Summary: 
This paper describes the measurements made in an urban canyon environment of a relay network scenario to determine the capacity of the multiple-input-multiple-output (MIMO) channel. While varying antenna number and spacing, we measure the channel matrices in the 3.7 GHz band using a 44 switching MIMO channel sounder. The results show that antenna spacing is shown to have less impact than signal-to-noise (SNR) on MIMO channel capacity in a line-of-sight (LOS) environment when physical antenna spacing is selected at four wavelengths. As a result, in an urban MIMO LOS scenario, a base station can provide sufficient data throughput to relay station because most links from base station to relay station have LOS environment and are free from restriction of antenna spacing.