A comparative analysis of LS and MMSE channel estimation techniques for underwater acoustic OFDM systems
Keywords:
Channel estimation, OFDM, UWA-OFDM, LS, MMSEAbstract
This article presents typical methods to improve the accuracy of channel estimation in underwater acoustic OFDM systems. The transmission of information in the underwater acoustic communication system is greatly affected by environmental factors, the quality of the underwater acoustic OFDM system depends heavily on the channel state information. The paper analyzes channel estimation techniques according to two algorithms LS and MMSE to evaluate the effectiveness of usability for acoustic underwater communication systems. The result shows that the MMSE algorithm is better than the LS algorithm with the requirements of channel state information.
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