Coupled Research in Ocean Acoustics and Signal Processing for the Next Generation of Underwater Acoustic Communication Systems
Progress rept. no. 3, 20 Oct 2014-19 Jan 2015
JP ANALYTICS LLC FALMOUTH MA
Pagination or Media Count:
Technical work this period focused on two areas. The first was continuation of work on developing a methodology within the framework of asymptotic random matrix theory RMT to explicitly model the time variability of acoustic channels and using this to predict underwater acoustic communications systems performance. Prior methods have accommodated time variability by assuming that the channel is time invariant over an appropriately short interval of time. By explicitly modeling the time variability within the RMT framework it is hoped that the resulting analysis will more accurately predict the trade-offs associated with the rate of channel fluctuations, the number and configuration of hydrophone array elements, the size of filters in subsequent equalizers, and the structure of the equalizer adaptation algorithms. The work has progressed with the development of a framework in which the channel variability represented by the Delay-Doppler spread function denoted by Uepsilon, nu.
- Non-Radio Communications