Sensitivity of OFDM and MC-CDMA to carrier phase errors

In this contribution, we investigate the effect of carrier phase errors on the performance of orthogonal frequency division multiplexing (OFDM) and multicarrier code-division multiple access (MC-CDMA). We show that OFDM and MC-CDMA have essentially the same sensitivities to carrier phase errors. A constant carrier phase offset yields no degradation of the system performance. We show that OFDM and MC-CDMA are quite sensitive to a carrier frequency offset : the degradation caused by this impairment is an increasing function of the number of carriers. Carrier phase jitter on the other hand gives rise to a degradation that is independent of the number of carriers, but only depends on the jitter variance.

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