Multiplicative Mismatched Filters for Optimum Range Sidelobe Suppression in Barker Code Reception

Very efficient sidelobe suppression of Barker codes of length 13 is achieved through the use of a novel mismatched filter. The mismatched filter is comprised of a conventional matched filter cascaded with a computationally efficient filter based on multiplicative expansion. Several constant parameters are introduced in the terms of the expansion and they are optimized to improve the performance of the filter. The filter is shown to achieve a mainlobe to peak sidelobe ratio of almost 61.9 dB. This is achieved at the cost of some deterioration in the signal to noise ratio at the filter output. The loss in signal to noise ratio (SNR) is shown to be only 0.2 dB. It is suggested that by applying the technique to compound Barker codes, the mainlobe to peak sidelobe ratio could be maintained and the signal to noise ratio performance could be improved. Confidential Document Provisional patent application has been filed for this work. Patent pending. The entire document is to be treated as confidential. The contact details about licensing and technical questions and queries are provided in table 1: Table 1. Contact information For licensing information, contact: For technical information, contact: Rupal Desai, MS Engg, MBA Adly T. Fam, Ph.D Commercialization Manager Professor Intellectual Property Division Department of Electrical Engineering Science, Technology Transfer and Economic Outreach 332, Bonner Hall UB Technology Incubator, Suite 111 The State University of New York at Buffalo 1576 Sweet Home Road Buffalo, NY 14260-1920 Amherst, NY 14228 (716) 645-5500 ext. 15 Email: [email protected] FAX: (716) 645 3436 (716) 645-3115 ext. 2128 www.stor.buffalo.edu FAX: (716) 645-3656