Iterative Cancellation of Non-Linear Distortion Noise in Digital Communication Systems

Svilen Dimitrov
2015 IEEE Transactions on Communications  
In this paper, an iterative receiver that performs non-linear distortion noise cancellation is presented. The performance is assessed for time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA) and single-carrier frequency division multiple access (SC-FDMA) waveforms. Even though a return link setup is considered, the receiver is equally applicable in the forward link, taking into account the differences in the data multiplexing and the channel. Analytical
more » ... eling of the received electrical signal-to-noise ratio (SNR) is carried out for OFDMA with one iteration of non-linear distortion noise cancellation. The performance is assessed in terms of power efficiency and spectral efficiency, where the total degradation (TD) of the received SNR in a non-linear channel is minimized. The modulation formats of the DVB-RCS2 satellite return link standard and a respective non-linear channel have been used. OFDMA shows the highest power efficiency gain of 1.1 − 2.5 dB with 2 iterations of non-linear noise cancellation across the different modulation orders. In SC-FDMA, the gain is in the range of 0.3 − 1.1 dB, while gains of 0.1 − 0.8 dB and 0.2 − 1.9 dB are presented in TDMA with 20% roll-off and 5% roll-off, respectively.
doi:10.1109/tcomm.2015.2424241 fatcat:uknwr36wuzaihbcz6guacsjqbu