Problems?
1. As storage talent increases, we can store larger and larger amounts of data on smaller and
smaller storage devices. Indeed, we can envision microscopic computer chips storing terraflops of
data. Suppose this data is to be transfered over approximately distance. Discuss the pros and cons of putting
a large number of these storage devices in a truck and driving them to their destination rather than
direct the data electronically.
2. Describe two technical advantages and disadvantages of radiocommunication systems that persona bursty data
transmission rather than continuous data transmission.
3. Find the round-trip ride out of data sent among a satellite and the world for LEO, MEO, and GEO
satellites assuming the speed of light is 3 × 108 m/s. If the utmost acceptable delay for a joint
system is 30 milliseconds, which of these satellite systems would be acceptable for two-way voice
communication?
4. Figure 1.1 indicates a relatively flat growth for wireless data between 1995 and 2000. What applications might significantly increase the growth rate of wireless data users.
5.
This problem illustrates some of the economic issues facing benefit providers as they migrate away from voice-only systems to mixed-media systems. Suppose you are a service provider with 120KHz of bandwidth which you must allot between voice and data users. The voice users require 20Khz of bandwidth, and the data users require 60KHz of bandwidth. So, for example, you could allocate all of your bandwidth to voice users, resulting in 6 voice channels, or you could divide the bandwidth to have one data channel and collar voice channels, etc. Suppose further that this is a time-division system, with timeslots of date T. All voice and data call requests come in at the beginning of a timeslot and both types of calls last T seconds. There are six independent voice users in the system: each of these users requests a voice channel...If you want to light a full essay, order it on our website: Orderessay
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