Title :
Performance evaluation for asynchronous MC-CDMA systems with an effect of carrier-frequency offsets
Author :
Ko, Kyunbyoung ; Kim, Taeyoung ; Hong, Daesik
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
In this paper, asynchronous multicarrier-code division multiple access (MC-CDMA) systems with a carrier-frequency offset for the uplink is analyzed over multi-path fading channels. Moreover, SINR degradations caused by a carrier-frequency offset are evaluated. Derived and simulation results show that the performance of asynchronous MC-CDMA systems is sensitive to both the correlation among sub-carriers and the carrier-frequency offset. Furthermore, it is verified that a guard period is required for MC-CDMA systems in order to mitigate inter-symbol interference (ISI).
Keywords :
code division multiple access; fading channels; interference suppression; intersymbol interference; multipath channels; radiofrequency interference; SINR degradations; asynchronous MC-CDMA systems; asynchronous multicarrier-code division multiple access systems; carrier-frequency offsets; intersymbol interference; multipath fading channels; Degradation; Discrete Fourier transforms; Fading; Frequency diversity; Intersymbol interference; Multicarrier code division multiple access; OFDM; Performance analysis; Rayleigh channels; Signal to noise ratio;
Conference_Titel :
Communications, 2003. ICC '03. IEEE International Conference on
Print_ISBN :
0-7803-7802-4
DOI :
10.1109/ICC.2003.1204095
