. Heriot-Watt University Edinburgh Electrical Electroni

. Heriot-Watt University Edinburgh Electrical Electronic and Computer Engineering B30SQ Communications Assignment 2: Transmission Fundamentals (a) In digital transmitter /receiver equipment the Root Raised Cosine (RRC) filter is used. Perform a literature search and produce a guide to the RRC. Why is it used? Define its spectral and temporal responses. Are there any additional benefits that accrue as a result of using such an RRC filter? (b) (i) A 16-QAM constellation is shown in the figure below. If the maximum transmission vector in this constellation is 100 volts rms. Determine the long-term average power transmitted from a 50W antenna if each point in the constellation is equally likely to be transmitted. Figure 1 (ii) By how much (dB) can the QAM power be increased in order to make the average transmitter power equal to that which would be used by the equivalent PSK modulator which also uses 100 volt rms. Pulses? Submission deadline: Week 5 Monday
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