Title :
Effect of carrier phase noise and frequency offset on the performance of multicarrier CDMA systems
Author :
Tomba, Luciano ; Krzymien, Witold A.
Author_Institution :
Padova Univ., Italy
Abstract :
Kaiser (1995) showed that OFDM-CDMA outperforms DS-CDMA in radio fading channels in terms of spectral efficiency, under the assumption of ideal carrier recovery and chip synchronization. However, residual carrier frequency offset and phase noise degrade the system performance significantly if suitable countermeasures are not taken. In this work we consider the downlink of a cellular multicarrier CDMA system. In particular, we evaluate the impact of the carrier frequency offset and Wiener phase noise on the system performance considering typical indoor radio channels. Moreover, a frequency detector is used to reduce the impairment produced by the carrier frequency offset. Results are given in terms of BER obtained by means of simulations and analytical computations
Keywords :
cellular radio; code division multiple access; frequency division multiplexing; indoor radio; interference suppression; land mobile radio; multipath channels; phase noise; radiofrequency interference; stochastic processes; synchronisation; BER; Wiener phase noise; carrier phase noise; carrier recovery; cellular multicarrier CDMA system; chip synchronization; downlink; frequency detector; indoor radio channels; orthogonal frequency division multiplexing; performance; radio fading channels; residual carrier frequency offset; spectral efficiency; Degradation; Detectors; Downlink; Fading; Frequency synchronization; Indoor radio communication; Multiaccess communication; Phase noise; Radio communication countermeasures; System performance;
Conference_Titel :
Communications, 1996. ICC '96, Conference Record, Converging Technologies for Tomorrow's Applications. 1996 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-3250-4
DOI :
10.1109/ICC.1996.533662
