Enhanced Mobile Multiple-Input Multiple-Output Underwater Acoustic Communications

Improvement of Multiple-input/multiple-output Time Reversal Communications in Underwater Acoustic Channels Using Adaptive Equalizers

The spatial and temporal focusing properties of time reversal methods can be exploited for undersea acoustic communications. Spatial focusing mitigates channel fading and produces a high signal-to-noise ratio at the intended receivers along with a low probability of interception elsewhere. While the temporal focusing (compression) reduces significantly intersymbol interference (ISI), there alwa...

Enhanced channel estimation and symbol detection for high speed multi-input multi-output underwater acoustic communications.

The need for achieving higher data rates in underwater acoustic communications leverages the use of multi-input multi-output (MIMO) schemes. In this paper two key issues regarding the design of a MIMO communications system, namely, channel estimation and symbol detection, are addressed. To enhance channel estimation performance, a cyclic approach for designing training sequences and a channel e...

Special Issue: Multiple-Input Multiple-Output (MIMO) Communications

The idea of using multiple transmit and receive antennas in wireless communication systems is one of the most important breakthroughs in communication theory during the last decade. Popularly referred to as MIMO technology, this concept can greatly improve data throughput and link performance in wireless networks. In principle, a MIMO system can operate in, or anywhere between, one of the two p...

Multiple - Input Multiple - Output ( MIMO ) Optical Wireless Communications

Multiple-Input Multiple-Output Antennas for Ultra Wideband Communications