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# Maximum Amount of Channels A Link Can Carry

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A microwave radio link operates over a bandwidth of 400 MHz at C band. The link carries a number of channels of data using FDMA. Each channel has an RF bandwidth of 36 MHz and 4 MHz guard bands are needed between channels.

a. What is the maximum number of channels that the link can carry?

b. If half rate error correction coding is applied to the 100 kbps bit stream in part (c) above before transmission over the microwave link, how many voice channels can be carried by one RF channel?

#### Solution Preview

a. A microwave radio link operates over a bandwidth of 400 MHz at C band. The link carries a number of channels of data using FDMA. Each channel has an RF bandwidth of 36 MHz and 4 MHz guard bands are needed between channels. What is the maximum number of channels that the link can carry?

Each channel occupies a frequency space of f_channel given by the sum of the channel bandwidth f_BW = 36MHz and the guard band frequency space f_GB = 4MHz so we can write

The number of channels N_channel in the allocated C Band bandwidth is ...

#### Solution Summary

The maximum amount of channels a link can carry are determined in the solution.

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## Design a system for the organization of your choice.

Design a system for the organization of your choice. This could be for a current or former employer or some fictitious organization. The system you design might be data storage, telecommunications, e-commerce, accounting information, manufacturing process system, inventory management, or some other approved system. You will discover (or create, if you choose a fictional organization) and explain the main systems in place, discuss the integration, and explain how the data collected by these systems helps the organization make decisions and carry out the strategic plan.

Specific parts of the design paper should include:

* Determine the System (Needs Analysis)
o Problem to solve
o Determine specific issue
o What part can technology solve
o Get input from creators and users
o How solving this problem supports the organization's mission

* Integration of system into current organization system
o Describe current major systems
o Discuss compatibility of the new system with current systems
o Explore various decision-making support models
o Evaluate the advantages and limitations of data in DSS
o Explore different implementation processes
o Define the process chosen
o Explore security issues for this system

* Feasibility
o Hardware determinants (types, capacity, speed, processing power)
o Software determinants (types, applications, compatibility, integration)
o maintenance and upgrade, obsolescence issues, future changes in technology
o Cost analysis (total upfront cost, total cost of ownership)
o Organizational culture and technology changes

* Measurement
o Critical success factors (how often it will be monitored, how we will know it is successful, creator and/or user of the data/system input)
o Efficiency measurement (how has it increased or not increased efficiency)
o Cost measurement (save costs, ROI on initial outlay)

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