Title :
Effects of frequency offset on MC/CDMA system performance
Author :
Jang, Jiho ; Lee, Kwang Bok
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
A multicarrier code division multiple access (MC/CDMA) system, which is being considered for the implementation of a high data rate system in the future, offers robustness to multipath fading and high spectral efficiency. However, carrier frequency offset between the transmitter and the receiver degrades system performance. In this paper, the effects of frequency offset are theoretically analyzed and verified by computer simulations in a downlink channel. Both equal gain combining (EGC) and maximal ratio combining (MRC) are considered in combining subcarrier signals in the analysis
Keywords :
Rayleigh channels; code division multiple access; diversity reception; error statistics; land mobile radio; multipath channels; multiuser channels; radio links; radiofrequency interference; spread spectrum communication; BER; MC/CDMA system performance; Wadamard-Walsh orthogonal codes; carrier frequency offset; computer simulations; downlink channel; downlink transmission; equal gain combining; frequency selective Rayleigh fading channel; high data rate system; high spectral efficiency; maximal ratio combining; multicarrier code division multiple access; multipath fading; multiuser interference; orthogonal frequency division multiplexing; receiver; spreading codes; subcarrier signals; transmitter; Computer simulation; Degradation; Diversity reception; Fading; Frequency; Multiaccess communication; Multicarrier code division multiple access; Robustness; System performance; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778119
