(a) Consider an audio signal comprised of the sinusoidal term s(t) = 3 cos 500nt (i)...

 

Transcribed Image Text:

(a) Consider an audio signal comprised of the sinusoidal term s(t) = 3 cos 500nt (i) Find the signal to quantization noise ratio when this is quantized using 10-bit PCM (4 marks) (ii) How many bits of quantization are needed to achieve a signal to quantization noise (4 marks) ratio of at least 40 dB? (i) Amplitude shift keying (ASK) is to be used to transmit binary data with a given value of carrier amplitude, A, and noise power per hertz, No. Prove that a modulation index of m = 1 yields the minimum bit error rate. (6 marks) (ii) Binary information is transmitted at 10 kbps using on-off keying (OOK). The carrier frequency is 10 MHz, and the received carrier amplitude is 102 V. The additive noise power is 5 x 10-¹0 W/Hz. Design a coherent detector and find the bit error rate. (a) Consider an audio signal comprised of the sinusoidal term s(t) = 3 cos 500nt (i) Find the signal to quantization noise ratio when this is quantized using 10-bit PCM (4 marks) (ii) How many bits of quantization are needed to achieve a signal to quantization noise (4 marks) ratio of at least 40 dB? (i) Amplitude shift keying (ASK) is to be used to transmit binary data with a given value of carrier amplitude, A, and noise power per hertz, No. Prove that a modulation index of m = 1 yields the minimum bit error rate. (6 marks) (ii) Binary information is transmitted at 10 kbps using on-off keying (OOK). The carrier frequency is 10 MHz, and the received carrier amplitude is 102 V. The additive noise power is 5 x 10-¹0 W/Hz. Design a coherent detector and find the bit error rate.

Answer rating: 100% (QA)

Consider an audio signal comprised of the sinusoidal term st3cos 500t Find the signal to quantization noise ratio when this is quantized using 10bit PCM The signal to quantization noise ratio SQNR is ... View the full answer