Assignment:
Q1. In the late 1980's in Japan, a digital portable telephone system. called the Portable Handy phone System (PHS) was specified. The specification for PHS includes a car-der spacing of 300 kHz. Is the standard susceptible to frequency-selective fading in environments for which the channel has an rms delay spread on the order of 300 ns?
Q2. A telephone standard called Digital European Cordless Telephone (DECT) was designed for high traffic density and short range (indoor) communications. The specification for DECT includes a carrier spacing of 1.728 MHz. Consider that the rms delay spread equals 150 ns. Calculate whether an equalizer needs to be included within the DECT receiver.
Provide complete and step by step solution for the question and show calculations and use formulas.