Compare a wireless radio system with a fiber-optic communication system for digitaldata communications over a distance of 1 km. Assume a desired data rate of 75 Mbps. Give pros and cons, advantages and disadvantages, of each. Which one would be better, all factors being considered?

"Always study for life not for exam! Consider the following equally likely binary pulses and coherently detected over a Gaussian channel with = 0.1 watts/Hz. 2 3₁(1) 0 a) Find the probability of bit error. [3] b) Find the probability of error if the noise is doubled. [2] c) Find the required noise spectral density, No, if the required probability of bit error is 0.5 x 10-9. [3] d) Draw the diagram of an optimal receiver, label the diagram! [2]

What are the key components and design principles of communication systems, and how do you choose the appropriate modulation scheme for a given application?

Networking A digital signal is to be designed to permit 100 Mbps for a bandwidth of 10 MHz. Determine: (1) Number of levels        (2) signal to noise ratio. According to Shanon Capacity