Adaptive Antenna Processing for Cellular Base Stations

Period of Performance: 07/09/1998 - 01/31/2000

$725K

Phase 2 SBIR

Recipient Firm

Viasat, Inc.
2290 Cosmos Court
Carlsbad, CA 92009
Principal Investigator

Abstract

A radical new approach to adaptive antenna processing, based on the emerging theory of Per Survivor Processing (PSP) is proposed to enhance performance of cellular systems. This approach offers the opportunity to achieve large performance improvements (e.g. improved acquisition and interference rejection giving way to increased capacity and robustness) over conventional adaptive antenna array techniques when a large number of users, difficult dynamics and/or channel uncertainty are present. Orders of magnitude improvement in performance are expected. PSP is now becoming feasible due to the rapidly increasing computational power and decreasing price of modern digital technology. The PSP adaptive algorithms have been developed and simulated to verify these performance gains in dense urban environments with mobile users, multipath and Co-Channel Interference (CCI) under the Phase I effort. The focus of this proposed Phase II work will be to develop a prototype system capable of demonstrating the performance of the PSP-AAP algorithm non-real-time and in a laboratory environment. Options provide for an over-the-air demonstration and advanced simulation of the system to a wide variety of environments.