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In reality, oscillators experience spectral broadening due to internal noise process, which becomes a potentially serious problem in OFDM transmission schemes, especially when high order signal constellations are employed. The paper analyzes the influence of the transmitter phase noise to the OFDM system in the multi-path fading channel, and shows when the transmitter contains large phase noise, the...
A data-aided iterative algorithm to estimate the nonlinearities of wireless emitters for specific emitter identification (SEI) is presented. To achieve robust estimation, inter symbol interference (ISI) is removed by iteratively estimating the channel coefficients and nonlinear transmit symbols to achieve asymptotically unbiased estimation. The complexity of the iteration procedure is further reduced...
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