Application of Adaptive Array Processing to Cellular Base Station Antennas

Period of Performance: 05/12/1998 - 05/11/2000


Phase 2 SBIR

Recipient Firm

Mission Research Corp.
735 State Street
Santa Barbara, CA 93101
Principal Investigator


The Phase I effort demonstrated novel filtering structures capable of mitigating co-channel interference in specific cellular systems. The proposed Phase II base effort will provide an up-front demonstration of this technology using recorded data. Results from this demonstration and other off-line processing will provide insight into the phenomenology of the problem. Further, the proposed base effort will investigate two algorithmic improvements which appear quite promising. The best algorithm will be tailored to meet the constraints presented by the design of current cellular networks. The optional effort includes a software simulation which will assess the performance enhancement offered by the technology. The best algorithm, as identified in the base year, will then be implemented with commercial off-the-shelf DSP hardware. Using this hardware, a demonstration is planned to showcase the real-time practicality of the novel filtering structure. Finally, the optional effort will also study both the downlink problem and possible technology transfer to other cellular standards. The technology developed and implemented will be of great use in the commercial cellular industry as limited frequency spectrum and increasing usage will result in co-channel interference limited systems. While the field of companies offering solutions to this problem is large, MRC offers a fully adaptive solution for dynamic environments with reasonable computational cost.