An Off-Line FQPSK-B Software Receiver

Software that performs the functions of an FQPSK-B receiver (and to some extent, an FQPSK-B transmitter) has been developed to reduce the risks and costs associated with the development of hardware FQPSK-B transmitters and receivers. (“FQPSK-B” signifies version B of Feher Quadrature-Phase-Shift Keying, which is a patented, bandwidth-efficient phase-modulation scheme named after its inventor. FQPSK-B includes filtering, beyond that of FQPSK, for further containment of the modulation spectrum.) This software can be especially helpful to engineers who are considering the use of FQPSK-B for bandwidth- efficient, high-data-rate digital communications.