2019_programme: FULL-DUPLEX CHANNEL ANALYSIS FOR UNDERWATER ACOUSTIC COMMUNICATIONS

Back


  • Session: 05. Underwater Communications and Networking
    Organiser(s): Tsimenidis Charalampos, Mitchell Paul, Pelekanakis konstantinos
  • Lecture: FULL-DUPLEX CHANNEL ANALYSIS FOR UNDERWATER ACOUSTIC COMMUNICATIONS [invited]
    Paper ID: 1014
    Author(s): Healy Cornelius, Jebur Bilal, Tsimenidis Charalampos, Neasham Jeff, Chambers Jonathon
    Presenter: Healy Cornelius
    Presentation type: oral
    Abstract: The limited bandwidth available in underwater acoustic communication channels motivate the investigation of multiple access methods that maximize the capacity, such as full-duplex (FD) operation that can approximately double capacity. This paper presents characterization results of the self interference (SI) channel from experimental data obtained by seatrials in the North Sea. Two scenarios are considered, i.e. hard and soft sea bottom with water column depths of 50 m. Initial results indicate that the delay spread of the local reverberation can extend up to 1.5 s before it reaches the noise floor level. This in turn has significant implications on the required hardware complexity of the SI mitigation methods based on adaptive filter echo cancellation, which will require tens of thousands of filter taps to deal with this delay spread range and prolonged training periods. Furthermore, the achievable range of the FD-based communication links will be affected by the levels of SI present in these channels, therefore, the results and channel modelling presented in this paper will be useful to FD modem designers.
      Download the full paper
  • Corresponding author: Dr Healy Cornelius
    Affiliation: Newcastle University
    Country: United Kingdom
    e-mail:

Back