Title :
BER Analysis of SDMA-OFDM Systems in the Presence of Power Amplifier Nonlinearities
Author :
Gregorio, F.H. ; Werner, S. ; Cousseau, J.E. ; Laakso, T.I.
Author_Institution :
Signal Process. Lab., Helsinki Univ. of Technol., Espoo
Abstract :
The extension of OFDM to multiuser structures like space division multiple access (SDMA) helps to increase the spectral efficiency and system capacity. However, power amplifier nonlinearities reduce severely the performance due to the high peak to average power ratio (PAPR) that is a typical characteristic of multicarrier systems. This paper derives a theoretical upper bound on the bit error rate performance of a SDMA-OFDM system subject to power amplifier nonlinearities. Simulations show good agreement with theoretical results. The BER performance as a function of power amplifier efficiency is also studied
Keywords :
OFDM modulation; error statistics; matrix algebra; space division multiple access; BER analysis; SDMA-OFDM systems; bit error rate performance; multicarrier systems; peak to average power ratio; power amplifier nonlinearities; space division multiple access; Bit error rate; Dynamic range; High power amplifiers; Mobile antennas; Nonlinear distortion; OFDM; Peak to average power ratio; Power amplifiers; Transmitting antennas; Upper bound;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-9710-X
Electronic_ISBN :
0-7803-9711-8
DOI :
10.1109/SPAWC.2006.346412
