Published in Colling, J., & Viswanathan, R. (1994) Performance of a rank sum combiner for FFH-MFSK signaling in partial band interference. Conference Record, 1994 IEEE Military Communications Conference, 1994. (MILCOM '94), v.2, 395-399. doi: 10.1109/MILCOM.1994.474010 ©1994 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.


We consider the performance of a fast frequency hopping M-ary frequency shift keying spread spectrum rank sum diversity combiner. The spread signals are received in partial band interference and the parameters of this intentional interference are unknown. For the BFSK (M=2) case and a Rayleigh fading channel, the analytical performance of the rank sum receiver is compared to that of the linear receiver. Simulations are carried out for the rank sum receiver in a non-fading channel and compared to simulated performance of the clipper receiver and product combiner receiver (PCR). The performance of the rank sum combiner, in the non-fading channel, is comparable to the product combiner receiver and almost always is worse than the clipper receiver. In the Rayleigh fading channel, the rank sum receiver performs considerably better than the linear receiver when the jamming fraction is relatively small.