Communication Systems

  Problem 1: Companding is known to reduce the quantization errors. Consider a µ = 255 compander to be used with a v =3 bit quantizer where the output varies over ±8.75𝑉. For an input of 0.6 V what is the quantization error with or without companding Problem 2: Given a single tone input signal, 𝑚(𝑡) = 2cos(500π𝑡), determine the signal to quantization noise ratio (SQNR) in decibels for 8-bit PCM.