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Assume that an analog audio voice-frequency (VF) telephone signal m(t) occupies a band from 300 Hz...
(5) A PCM system encodes samples using an 8-bit ADC. In the case of peak signal...
(5) A PCM system encodes samples using an 8-bit ADC. In the case of peak signal amplitude, estimate the signal to quantization noise ratio in dB (6) The output SQNR of a 10-bit PCM was found to be insufficient at 30 dB. To achieve the desired SQNR of 42 dB, an increase to the number of quantization levels was needed. Determine the fractional increase in the transmission bandwidth required. (7) A signal x(t) band-limited to 3kHz is sampled at a...
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth...
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L 65,5 (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting (c) Determine the number of binary digits per second (bit/s) required to encode the audico (d) For practical reasons discussed in the text, signals are sampled at a rate well...
Discuss uniform and non- uniform quantization with proper example and diagram. Q6 (a) (5 marks) (b)...
Discuss uniform and non- uniform quantization with proper example and diagram. Q6 (a) (5 marks) (b) As a telecommunication engineer, you are assigned to design a Pulse Code Modulation (PCM) signal for a telephone system. Assume that an analog audio voice frequency signal occupies a band from 300-3400 Hz. The signal is to be converted to a PCM signal for transmission over a digital telephone system. Each sample is represented by 8 bits. Determine: the bandwidth using a sinc function;...
b) A signals, m(t), is band-limited to 5 KHz, and , is band-limited to 5 KHz,...
b) A signals, m(t), is band-limited to 5 KHz, and , is band-limited to 5 KHz, and three other signals, m(t), m(t) and mu(t), have a bandwidth of 2.2 KHz. These signals are to be transmitted by means of multiplexing (TDM). nals are to be transmitted by means of time-division Set up a TDM scheme for accomplishing this multiplexing requirement, with each signal sampled at or above its Nyquist rate. If the commutator output is quantized with L=512 levels and...
a. Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission. (CO1: PO1 - 4...
a. Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission. (CO1: PO1 - 4 marks) b. Sampling, quantization and coding are the three processes used to represent an analog signal in digital form. Considering an input signal into an 8-bit Pulse Code Modulation (PCM) system is a 20 Vp-p 50-Hz, answer the followings: i. Using appropriate diagram briefly describe TWO (2) basic methods to perform the sampling function. (CO2: PO2 - 2 marks) Determine the number of quantization...
(5) A PCM system encodes samples using an 8-bit ADC. In the case of peak signal amplitude, estimate the signal to quantization noise ratio in dB (6) The output SQNR of a 10-bit PCM was found to be insufficient at 30 dB. To achieve the desired SQNR of 42 dB, an increase to the number of quantization levels was needed. Determine the fractional increase in the transmission bandwidth required. (7) A signal x(t) band-limited to 3kHz is sampled at a...
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L 65,5 (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting (c) Determine the number of binary digits per second (bit/s) required to encode the audico (d) For practical reasons discussed in the text, signals are sampled at a rate well...
Discuss uniform and non- uniform quantization with proper example and diagram. Q6 (a) (5 marks) (b) As a telecommunication engineer, you are assigned to design a Pulse Code Modulation (PCM) signal for a telephone system. Assume that an analog audio voice frequency signal occupies a band from 300-3400 Hz. The signal is to be converted to a PCM signal for transmission over a digital telephone system. Each sample is represented by 8 bits. Determine: the bandwidth using a sinc function;...
b) A signals, m(t), is band-limited to 5 KHz, and , is band-limited to 5 KHz, and three other signals, m(t), m(t) and mu(t), have a bandwidth of 2.2 KHz. These signals are to be transmitted by means of multiplexing (TDM). nals are to be transmitted by means of time-division Set up a TDM scheme for accomplishing this multiplexing requirement, with each signal sampled at or above its Nyquist rate. If the commutator output is quantized with L=512 levels and...
a. Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission. (CO1: PO1 - 4 marks) b. Sampling, quantization and coding are the three processes used to represent an analog signal in digital form. Considering an input signal into an 8-bit Pulse Code Modulation (PCM) system is a 20 Vp-p 50-Hz, answer the followings: i. Using appropriate diagram briefly describe TWO (2) basic methods to perform the sampling function. (CO2: PO2 - 2 marks) Determine the number of quantization...
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