EurOCEAN 2000 - Vlaams Instituut voor de Zee

The I-Q constellation diagram and the MSE learning curve for User 2 also show that
after the initial training period the MSE fluctuates around a minimum of approximately
–14dB with a variance of ±1dB. No bit errors could be detected in the transmissions of
user 2.
Figure 4: MSE error convergence for User1 and User 2 employing processing of array
elements 1-8
CONCLUSIONS
The results of this work demonstrate the feasibility of DS/CDMA for multi-
access underwater acoustic data transmission. Additionally, the successful
demodulation of recorded signal sets provides excellent inspection of the
acquired-data quality.
User 1 User 2
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