The SINR Performance of Cascaded Adaptive Arrays.
Abstract
This report analytically examines and discusses ways of maximizing the output signal-to-noise plus interference ratio (SINR) of cascaded processors. Investigations of various configurations of cascaded Power Inversion (PI) and Least Mean Square (LMS) processors are considered. The primary objective of the investigation is to derive techniques to overcome the limited dynamic range problem of the LMS processor. First a fully implemented cascaded array system of N-elements is considered where each LMS array has N inputs, each of which is preceded by a PI array with each PI array connected to all antenna elements. This makes it possible to investigate the interaction of cascading the two processors, but it is an unrealistic implementation because of cost and complexity. Alternate approaches, referred to an thinned cascaded designs, examines the SINR output of cascaded arrays employing a minimum of PI control loops while maintaining maximum SINR. In general, it was determined that maximum SINR could not be maintained by arbitrarily thinned configurations, but could be achieved for a number of cases by careful selection of the PI steering vectors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1982
- Accession Number
- ADA120485
Entities
People
- Henry S. Eilts
Organizations
- Ohio State University