SMART DIVERSITY RECEIVERS FOR DYNAMIC, MULTIPATH, FREQUENCY SELECTIVE FADED FQPSK AND OTHER SYSTEMS

Abstract

Design, performance Test and Evaluation (T&E) of a novel smart diversity receiver, based on Feher Diversity (FD) patents over multipath, fast dynamic frequency selective fading channels is presented. A hardware simulator for construction of a frequency selective fading channel has been implemented in laboratory to resemble a telemetry aeronautical channel model, namely the two-path channel model. As an illustrative example, the block error rate (BLER) of a 1 Mb/s rate IRIG 106-00 and CCSDS standardized Feher’s patented quadrature phase shift keying (FQPSK) [1][2] with and without diversity in multipath frequency selective fading channels has been tested and evaluated. The experimental results clearly indicate significant performance improvement with the proposed diversity technique even in cases of severely distorted channels.