A PCM binary stream is produced using an 8,000 samples/s rate and 7-bit encoding. 32 synchronization bits are inserted into the binary stream for every 224 data bits. The resulting binary stream is then transmitted in two-level pulses over a baseband channel, with r = 0.2. This is followed by digital band-pass modulation before the transmission. a. What is the bandwidth of the baseband transmission? b. Determine the bandwidth of the pass-band transmission under the following digital modulation schemes: c. BPSK. d. QPSK. e. BASK.
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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A PCM binary stream is produced using an 8,000 samples/s rate and 7-bit encoding. 32 synchronization bits are inserted into the binary stream for every 224 data bits. The resulting binary stream is then transmitted in two-level pulses over a baseband channel, with r = 0.2. This is followed by digital band-pass modulation before the transmission.
a. What is the bandwidth of the baseband transmission?
b. Determine the bandwidth of the pass-band transmission under the following digital modulation schemes:
c. BPSK.
d. QPSK.
e. BASK.
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