The closed-form BER expressions of PSK modulation for OFDM and SC-FDMA under jamming and imperfect channel estimation

This paper details the derivation of the closed-form BER expressions of PSK modulation in Rayleigh faded AWGN channel for OFDM and SC-FDMA under jamming and channel estimation error. It has addressed the issue by first approaching the problem from general case of PSK modulation in Rayleigh faded channel with channel estimation error and then narrowing it down for the specific case of OFDM and SC-FDMA under jamming. The coherent demodulation of PSK modulated OFDM/SC-FDMA symbols is performed by Frequency Domain Zero Forcing Equalization using Pilot Symbol Assisted Channel Estimation (PSACE) technique. Piecewise-linear interpolation is used for its low computational complexity.

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