Development of software modem for the MBC experiment in Antarctica

In this paper, we describe a software modem for MBC (Meteor Burst Communication) developed by the authors. By using the software modem with newly developed demodulation techniques, RANDOM (RAdio Network for Data Over Meteor) system, an MBC system designed and developed by the authors, succeeds in shortening the length of packet header. In an experiment conducted in Antarctica in 2004, RANDOM system showed greatly improved performance compared to a commercial MBC system operated on the same link in 2002.