Performance analysis of uplink MC-CDMA/TDD systems with pre-compensation

Multi-carrier code division multiple access (MC- CDMA) can obtain good frequency Rake diversity effect and has been widely accepted as one of the promising multiple access methods. In this paper, a novel power-limited pre-compensation method in MC-CDMA/TDD systems, which can avoid pilot insertion on the uplink and increase the spectral/power efficiency, is described. Only the phase of signal is pre-distorted before transmission at the mobile station´s transmitter to keep the transmission power constant. The BER performances of this system is analyzed and the numerical results are given.