Based on your understanding, answer the following questions. a. In a digital com

Question

Based on your understanding, answer the following questions. a. In a digital communication system, are we trying to recover the shape of the transmitted waveform? Justify your answer. b. Assuming an ideal digital communication channel without distortion or noise, what is the highest data rate can be achieved? Justify your answer. c. Given a binary communication system of 100kHz bandwidth without channel distortion, what is the highest bit rate without inter-symbol interference (ISI). What type of waveform to choose to achieve that? d. If ISI does exist due to channel distortion, what technique solves the ISI problem?

Explanation / Answer

a. Yes.

Because the shape of the transmitted signal may be changed during the transmission. The shape of the received signal should be same as the transmitted signal.So we are trying to recover the shape of the transmitted signal.

b. According to shannons law C=B*log(1+SNR), heighest data rate of digital communication channel depends on Bandwidth and Signal-to-Noise ratio.

c. Infinity

Because According to shannons law C=B*log(1+SNR)=10000*log(1+infinite)=infinite.

d. ISI mitigation techniques such as Adaptive equalization, DS-Spread spectrum, OFDM are used.

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