Unformatted text preview: (b) If the ASK data is modeled by the envelop term as a transition from one level to other level, what is the time to take to make such as transition (using the time to make a transition from 10% to 90% ) in terms of parameters in the equation? (c) Could you derive the necessary condition in terms of carrier frequency and quality factor, Q, such that both rise and fall transition time of the system equal to one cycle of the carrier? In other words, one bit time will take two carrier cycles. What is the maximal Q is allowed? (d) If the transition time is allowed for four cycles at end of the data bit, what is the maximal Q? (e) At the fixed carrier frequency, does higher Q lead to higher data rate? t A v dt dv dt v d c o ϖ α cos 2 2 2 2 = + + 2L R , cos 2 2 2 2 = = + + where t A v dt dv dt v d c o...
View Full Document
- Spring '09
- Ratio, Bit rate, Physical quantities, Kilobit, dt dt