Question

Which among the following statements holds true about the give graph?

a.

The energy required per bit increases exponentially with exponential increase in bits per Hertz

b.

The energy required per bit increases linearly with exponential increase in bits per Hertz

c.

The energy required per bit increases linearly with linear increase in bits per Hertz

d.

The energy required per bit increases exponentially with linear increase in bits per Hertz

Posted under Cognitive Radio

Answer: (d).The energy required per bit increases exponentially with linear increase in bits per Hertz Explanation:The graph shows that the energy required per bit increases linearly with exponential increase in bits per Hertz. The cost of energy varying from one to two bits per Hertz is equal to the variation from six to sever bits per Hertz. Bits per Hertz can be a valid measure for spectrum efficiency provided perfectly stable channel and power are available.

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Q. Which among the following statements holds true about the give graph?
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