A decision feedback receiver structure for bandlimited nonlinear channels

A decision feedback receiver structure for receiving binary phase-shift keyed signals over bandlimited, nonlinear satellite channels in the presence of both uplink and downlink additive Gaussian noise is derived. As an illustrative example of the receiver, a hard-limiting channel model is considered in detail, and two special cases are examined. Based on the analysis, an alternative receiver structure which is more suitable for implementation is derived. The performance of the receiver is evaluated by computer simulation techniques, and it is shown that significant performance improvements over the single sample sign detector can be obtained.