Title :
Effect of overlapping between successive carriers of multi-carrier CDMA with DPSK modulation and differential detection in a static fading multipath channel
Author :
Elnoubi, Said M. ; Elshamly, Abbas A.
Author_Institution :
Dept. of Electr. Eng., Alexandria Univ., Egypt
Abstract :
The effect of overlapping between successive carriers of a multi-carrier code division multiple access (MC-CDMA) with differential phase shift keying (DPSK) system on the performance in a multipath-fading channel is investigated. Transmitted data bits are differentially encoded before being serial to parallel converted to a number of parallel streams. On each stream each encoded bit is direct-sequence spread spectrum (DS-SS) modulated and transmitted with a certain number of carriers. Successive carriers of the system are allowed to overlap with various overlapping percentages. The system is analyzed with a differential detector for a static Rayleigh-fading multipath channel. The performance is compared to that of the conventional matched filter (CMF) receiver
Keywords :
Rayleigh channels; code division multiple access; differential phase shift keying; multipath channels; signal detection; spread spectrum communication; DPSK modulation; DS-SS modulation; MC-CDMA; differential detection; differential detector; differential phase shift keying; direct-sequence spread spectrum modulation; multi-carrier CDMA; multi-carrier code division multiple access; serial to parallel conversion; static Rayleigh-fading multipath channel; static fading multipath channel; Demodulation; Detectors; Differential quadrature phase shift keying; Fading; Interference; Matched filters; Multiaccess communication; Multicarrier code division multiple access; System performance; Transmitters;
Conference_Titel :
Computers and Communications, 1999. Proceedings. IEEE International Symposium on
Conference_Location :
Red Sea
Print_ISBN :
0-7695-0250-4
DOI :
10.1109/ISCC.1999.780947
