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What is the full form of CE-OFDM?

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What is the full form of CE-OFDM?

(a) Closed Envelope Orthogonal Frequency Division Multiplexing

(b) Constant Envelope Orthogonal Frequency Division Multiplexing

(c) Constant Evolute Orthogonal Frequency Division Multiplexing

(d) Closed Evolute Orthogonal Frequency Division Multiplexing

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The correct choice is (b) Constant Envelope Orthogonal Frequency Division Multiplexing

Explanation: In Constant Envelope Orthogonal Frequency Division Multiplexing, the complex modulated signals are positioned in a complex conjugated arrangement to obtain a real value inverse fast Fourier transform output. Also, phase modulation is applied in the real value time domain. This technique reduces the high peak to average power ratio of OFDM.

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