1) What is the bit rate that is transmitted by this coder in bits/second? A PCM coder performs an analog‐to‐digital conversion, then transmits the encoded signal over a digital network to a receiver running an equivalent PCM decoder. The PCM encoder runs under the following specifications: - It samples incoming analog signals at 200,000 samples/sec. - It performs uniform quantization on the PAM samples using a –3.2 volt to +3.2 volt scale and 5‐bit quantization

The bit interval of a binary signal 300 usec. Determine the bit rate in kbps.

(8) A digital recording system samples cach of two stereo input signals with a 16bit ADC at 44.1k sample per second. (a) Determine the output peak SNR for a fl- scale sinusoid. (b) The bit stream of digitized data is augment by the addition of error-correcting, clock extraction, display and control bit fields. These additional bits represent 100 percent overhead. Determine the output bit rate of this system. (c) If we would like to store an hour's worth of music using this system, determine the memory size required. (d) for a comparison, a high-grade collegiate dictionary may contain 1500 pages, 2 columns per page, 100 lines per column, 8 words per line, 6 letters per word and 7 bits per letter (all on average). Determine the memory size required to store it. Solution: (a) SY R-101 Ldn

Digital communications Encoding and Decoding of Information Signal 1- Discuss the effect of varying the frequency of the sampling signal on the output.