2. a) Derive the transfer function of Duobinary Signaling. b) Derive the probability of error performance of binary (bipolar) signaling. c) In a WiFi digital audio transmission, an analog signal is digitized so that the ratio of the peak-signal to the peak-quantization noise power is at least 96 dB. The sampling rate is 44.1 kilosamples/s Page 1 of 2 (i) Determine the number of quantization levels of the analog signal are needed for (S/N)peak-96 dB. (ii) Determine the number of bits per sample are needed for the number of levels found. (iii) Evaluate the data rate in bits/s.
Quantization and Resolution
Quantization is a methodology of carrying out signal modulation by the process of mapping input values from an infinitely long set of continuous values to a smaller set of finite values. Quantization forms the basic algorithm for lossy compression algorithms and represents a given analog signal into digital signals. In other words, these algorithms form the base of an analog-to-digital converter. Devices that process the algorithm of quantization are known as a quantizer. These devices aid in rounding off (approximation) the errors of an input function called the quantized value.
Probability of Error
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