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Which among the following is an expression for spectral efficiency?(a) η=\(\frac{R_sk}{B}\). where Rs is the symbol rate, B is the bandwidth, K is the number of bits per symbol(b) η=RsB where Rs is the symbol rate, B is the bandwidth, K is the number of bits per symbol(c) η=\(\frac{Bk}{R_s}\)where Rs is the symbol rate, B is the bandwidth, K is the number of bits per symbol(d) η=BK where B is the bandwidthThis question was addressed to me in class test.Question is from Techniques in section Cognitive Techniques of Cognitive Radio |
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Answer» CORRECT CHOICE is (a) η=\(\frac{R_sk}{B}\). where RS is the symbol rate, B is the bandwidth, K is the number of bits per symbol Best explanation: Spectral efficiency is given by the product of number of bits per symbol and symbol rate divided by bandwidth. It helps in achieving BALANCE between symbol rate and modulation type. |
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