Title :
Optimal uplink sequence assignment for multicarrier CDMA systems in Rayleigh fading channels
Author_Institution :
Dept. of Information Eng., Chinese Univ. of Hong Kong, China
Abstract :
We investigate sequence assignment on the uplink for multicarrier (MC) CDMA systems. In a fading channel, a user may experience different performance with different assigned sequences. Moreover, since different users experience different fading characteristics, careful assignment may yield improved performance for the whole system. We utilize the channel characteristics, and determine the optimal assignment that minimizes the total power for the system. Simulations show that major improvements can be obtained through suitable sequence design and optimal assignment.
Keywords :
Rayleigh channels; cellular radio; code division multiple access; quality of service; radio links; sequences; Rayleigh fading channels; code division multiple access; multicarrier CDMA systems; optimal uplink sequence assignment; AWGN; Additive white noise; Base stations; Fading; Frequency; Multiaccess communication; Narrowband; Power system modeling; Quality of service; Rayleigh channels;
Conference_Titel :
Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia. Proceedings of the 2003 Joint Conference of the Fourth International Conference on
Print_ISBN :
0-7803-8185-8
DOI :
10.1109/ICICS.2003.1292531
