Title :
Analysis of frequency diversity in MC-CDMA systems under correlated fading channels
Author :
Zheng, Kan ; Han, Lu ; Wang, Wenbo
Author_Institution :
Wireless Signal Process. & Network Lab., Beijing Univ. of Posts & Telecommun., China
Abstract :
MC-CDMA can obtain a good frequency diversity effect through spreading and despreading operation in frequency domain. In this paper, the impact of channel parameters to inherent frequency diversity is analyzed at first. Then, three spreading methods to achieve the frequency diversity are investigated. Not only frequency diversity but also multiple-user interference (MUI) is taken into account in our analysis. The achieved frequency diversity gains with different spreading methods are also affected by the combining schemes at the receivers when there are multiple users in the systems.
Keywords :
code division multiple access; correlation theory; diversity reception; fading channels; frequency-domain analysis; multiuser channels; radiofrequency interference; MC-CDMA system; MUI; fading channel correlation; frequency diversity gain; frequency domain analysis; multicarrier code division multiple access; multiple-user interference; spreading method; Diversity methods; Downlink; Fading; Frequency diversity; Frequency domain analysis; Intelligent networks; Multicarrier code division multiple access; Signal analysis; Signal processing; System performance; MC-CDMA; MUI; OFDM; frequency diversity;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618101