Which among the following is a challenge for spectrum decision models?(a) Combining multiple characterization parameters(b) Supporting OFDM networks(c) Supporting multiple spectrum bands(d) Maintaining a decision model for each characterization parameterI have been asked this question during a job interview.The origin of the question is Next Generation Wireless Network in section Next Generation Wireless Network of Cognitive Radio

Which among the following is a challenge for spectrum decision models?

1.	Which among the following is a challenge for spectrum decision models?(a) Combining multiple characterization parameters(b) Supporting OFDM networks(c) Supporting multiple spectrum bands(d) Maintaining a decision model for each characterization parameterI have been asked this question during a job interview.The origin of the question is Next Generation Wireless Network in section Next Generation Wireless Network of Cognitive Radio
Answer» Correct choice is (a) Combining MULTIPLE characterization parameters The explanation: Spectrum decision models can be built for various characterization parameters such as signal to noise, date rate, error rate, and other parameters that affect the quality of service. HOWEVER a decision model combining SEVERAL spectrum parameters is not available. Spectrum decision models SUPPORT OFDM networks that have multiple spectrum bands operating simultaneously for TRANSMISSION.

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