fig 1 (IMAGE) Compuscript Ltd Caption Fig. 1 | Proposed DD receiver with the optimal transfer function. (a) Optimal receiver structure. (b) Amplitude response of h(t). (c) Phase responses of h(t). Credit OES Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.