hi can you help me solve this question?..thank you..
hi can you help me solve this question?..thank you.. A Quadrature Phase Shift Keying (QPSK) modulator...
Question 4 (a) A 3,000 bit/second data terminal is connected to a modem with 25% raised-cosine roll-off pulse shaping is used. Calculate the transmission bandwidth Bt required at the modem output for each of the following schemes: (0) Binary amplitude-shift keying (ASK) transmission. [2 marks] (ii) Binary frequency-shift keying (FSK) transmission with a frequency deviation of +2,400 Hz around the carrier. [2 marks] (iii) 16-level quadrature amplitude modulation (QAM). [2 marks] (b) FSK transmission is used to transmit 750 bps...
An 8-ary PSK (phase shift keying) signal is transmitted over an additive, zero mean, band-limited Gaussian noise channel.The channel output is r(t)-s(t)+n(t), st<T, where s(tAcos 2rft+0) for ie 10,123,4,5,6,7) were,+8 16 8 The noise n(t) is narrowband, zero mean, bandpass Gaussian noise with power spectral density Sn (f) is shown in Figure 3, where B is the bandwidth of the noise S, (f) (Watts/Hz) 2 cf (Hz) Figure 3 T herefore, 2 2 2 0 elsewhere (i) What is the...