DocumentCode :
2428549
Title :
MIMO adaptivity for tactical communications in dynamic multipath and mobility environments
Author :
Martin, Carol C. ; Koshy, John C. ; Liberti, Joseph C.
Author_Institution :
Appl. Res., Telcordia Technol., Inc., Red Bank, NJ, USA
fYear :
2010
fDate :
12-14 April 2010
Firstpage :
1
Lastpage :
5
Abstract :
In this paper we investigate practical adaptivity methods for tactical multiple-input multiple-output (MIMO) applications that need to operate on-the-move in variable multipath environments. The key features of these methods include the ability to estimate in real-time the MIMO channel between the transmitter and receiver in a dynamic multipath environment, select the highest performance spatial operating mode, and adapt the transmit waveform and receive/transmit processing. As channel dynamics vary, the proposed adaptive MIMO system determines whether to operate in Uninformed Transmitter (without feedback) or Informed Transmitter mode based on both spatial and temporal metrics that characterize the channel conditions. The adaptivity methods investigated in this study will be used in a real-time testbed designed to demonstrate the key features of an adaptive MIMO link and assess performance in a real-world environment. In this paper we also describe the adaptive MIMO testbed, the frame transmission structure, and channel sounding waveform used for the spatial adaptivity tests.
Keywords :
MIMO communication; mobile radio; radio transmitters; MIMO adaptivity; MIMO channel; channel sounding waveform; dynamic multipath; informed transmitter; mobility environments; spatial operating mode; tactical communications; tactical multiple-input multiple-output; uninformed transmitter; Acoustic testing; Adaptive systems; Bit error rate; Communication switching; Feedback; MIMO; Robustness; Switches; Transmitters; Transmitting antennas; MIMO; MIMO mode switching; spatial adaptivity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sarnoff Symposium, 2010 IEEE
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4244-5592-8
Type :
conf
DOI :
10.1109/SARNOF.2010.5469721
Filename :
5469721
Link To Document :
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