Title :
Comparison of Single- and Multi-carrier Block Transmissions under the Effect of Nonlinear HPA
Author :
Yang, Haibing ; Smulders, Peter F M ; Fledderus, Erik R.
Author_Institution :
Eindhoven Univ. of Technol., Eindhoven
Abstract :
The influence of nonlinear high power amplifier (HPA) at transmit side on single-and multi-carrier block transmission systems is studied in wireless mutipath environments. We consider the single carrier block transmission with frequency domain equalization (SC-FDE), OFDM and MC-CDMA. The effective signal-to-noise ratio (SNR) and SNR penalty caused by the nonlinearity are derived and analyzed. In addition, bit-error rate performance is simulated and compared for various constellations in different channel conditions. The results show that SC-FDE is a robust solution to the nonlinear effect appeared at transmitter side, compared with OFDM and MC-CDMA. MC-CDMA only achieves similar performance as SC-FDE in case of sufficiently high input power backoff, especially for lower constellations. Moreover, the SNR penalty obtained from simulations for SC-FDE and MC-CDMA has a good agreement with that analytically predicted.
Keywords :
OFDM modulation; channel estimation; code division multiple access; error statistics; multipath channels; power amplifiers; wireless channels; MC-CDMA; OFDM; bit-error rate; frequency domain equalization; nonlinear high power amplifier; single-multicarrier block transmission system; wireless mutipath channel; Bit error rate; Cause effect analysis; Frequency domain analysis; High power amplifiers; Multicarrier code division multiple access; OFDM; Robustness; Signal analysis; Signal to noise ratio; Transmitters;
Conference_Titel :
Communications and Vehicular Technology in the Benelux, 2007 14th IEEE Symposium on
Conference_Location :
Delft
Print_ISBN :
978-1-4244-1369-0
Electronic_ISBN :
978-1-4244-1370-6
DOI :
10.1109/SCVT.2007.4436261
