Title :
Performance evaluation for multi-carrier CDMA system
Author_Institution :
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
Abstract :
A new multi-carrier (MC) CDMA system using quadrature modulation in mobile radio communication is proposed. The signal-to-noise plus interference ratio (SNIR) in the backward link is analyzed under both Gaussian and time-selective fading channel. It is found that the capacity of this system depends on the carrier spacings and symbol shape. The sensitivity of the bit error with raised-cosine time windowing is simulated, and the performance is found to be optimized when the average roll-off factor α lies in the range (0.1⩽α⩽0.3)
Keywords :
Gaussian channels; channel capacity; code division multiple access; error statistics; fading; land mobile radio; quadrature amplitude modulation; radio links; radiofrequency interference; Gaussian channel; SNIR; average roll-off factor; backward link; bit error sensitivity; carrier spacings; mobile radio communication; multicarrier CDMA system; performance evaluation; quadrature modulation; raised-cosine time windowing; signal-to-noise plus interference ratio; simulation; symbol shape; system capacity; time-selective fading channel; Bandwidth; Fading; Frequency division multiplexing; Land mobile radio; Multiaccess communication; Multicarrier code division multiple access; Shape; Signal analysis; Signal generators; Spread spectrum communication;
Conference_Titel :
Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3157-5
DOI :
10.1109/VETEC.1996.501482
