Eigen Spreading
Abstract
In this contract we investigated the potential of using multiple antennas to improve communications in an interference/jammer intensive environment. The motivation for the work and the deviation from traditional beam forming and beam nulling techniques comes from the recent advances in the field of multi-input multi-output (MIMO) wireless communications which was fueled by the seminal work of Foschini, Gans and Teletar over a decade ago. MIMO techniques have shown tremendous improvement in the throughput and quality of wireless data communication links in commercial and interference limited scenarios, however, their utility to improve interference and jammer immunity has hitherto been unexplored. MIMO techniques augment the traditional 2-dimensional signaling space that consist of time and frequency into a three-dimensional space consisting of time, frequency, and space. The spatial element of the channel is energized via the use of multiple, spatially separate antennas. Commercial systems exploit the third signaling dimension to achieve diversity and/or spatial multiplexing gain, however, we want to see if it is possible to exploit it to achieve improved LPD and AJ immunity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 27, 2008
- Accession Number
- ADA484192
Entities
People
- Babak Daneshrad
- Weijun Zhu