Aiming at reducing the system complexity, raising communication rate and supporting
CDMA based applications, a direct sequence spread spectrum based underwater acoustic …

Spread spectrum techniques are used in communication systems to provide low probability
of intercept and jamming, to overcome the channel where the transmitted signal is distorted …

Anti-jamming, concealment and low signal noise ratio detection of direct sequence spread
spectrum system is much better than regular communication system. Under typical three …

With the goal of achieving high stability and reliability to support underwater point-to-point
communications and code division multiple access (CDMA) based underwater networks, a …

Conventional underwater acoustic (UWA) spread spectrum communication technology
usually uses m sequence as a spreading code, but pulse position modulation (PPM) spread …

Complexity of underwater channel itself and high investment, high risk of field tests are
limitations of underwater acoustic communication technology development. For high …

Underwater acoustic channel is a time varying, strong multipath, serious Doppler frequency
shift, and high noise interference channel. Aiming at the requirements of strong stability and …

Nowadays, the construction and application of underwater acoustic (UWA) networks has
received much focus in the research area of UWA communication. This paper constructed …

We compare two orthogonal modulation schemes for underwater acoustic sensor network
using spread spectrum communication. The first which has been recently published …

An effective algorithm is proposed to estimate the spread spectrum sequence in direct
spread spectrum sequence (DSSS) signal with the non-stationary noise for the underwater …