"Several statistical properties of underwater acoustic channels gathered from experiment data are analyzed. The baseband channel impulse response (CIR) is estimated using a time domain least squares technique with a sliding window applied to the probing sequences. From the CIR estimation, the probability distribution functions (PDFs) of the magnitude, real part, imaginary part, and phase of the CIR are calculated. Gamma, Rayleigh, and compound k distributions are fitted to the magnitude PDF and the fitness of the distributions are calculated with a two-sample Kolmogorov-Smirnov test. Other statistics such as the autocorrelation function, coherence time, and scattering function are evaluated. The results show that the underwater acoustics channels are worse than the Rayleigh fading commonly seen as the worst case radio channel.
Furthermore, the spatial and intertap correlation matrices of multiple input multiple output (MIMO) systems are estimated using experimental data. It is shown that underwater acoustic MIMO channels exhibit high spatial and temporal correlation. The bit error rate (BER) of the receiver using Frequency-domain turbo equalization is also evaluated in different channel correlation setups, demonstrating strong effects of the spatial-temporal correlation function on the performance"--Abstract, page iv.
Zheng, Y. Rosa
Grant, Steven L.
Electrical and Computer Engineering
M.S. in Electrical Engineering
- Missouri University of Science and Technology. Intelligent Systems Center
- National Science Foundation (U.S.)
- United States. Office of Naval Research
Missouri University of Science and Technology
Journal article titles appearing in thesis/dissertation
- Statistical properties of multi-input multiple-output (MIMO) underwater acoustic communications channels
- Statistical channel modeling of wireless shallow water acoustic communications from experiment data
- Impact of spatial correlation of fading channels on the performance of MIMO underwater communication systems
x, 47 pages
© 2011 Jesse Scott Cross, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Sound -- Transmission
Underwater acoustics -- Measurement -- Data processing
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b8620485~S5
Cross, Jesse Scott, "Impact of channel statistics and correlation on underwater acoustic communication systems" (2011). Masters Theses. 5035.