Title :
Power allocation optimization for uplink MC-CDMA systems
Author :
Saetang, Prajak ; Kunaruttanapruk, Suwich ; Jitapunkul, Somchai
Author_Institution :
Dept. of Electr. Eng., Chulalongkorn Univ., Bangkok
Abstract :
In this paper, we consider the joint transmitter and receiver for uplink MC-CDMA systems. The equation of the MMSE joint transmitter-receiver is expressed. We apply an optimization technique by rewriting the equation of the joint transmitter and receiver for uplink MC-CDMA systems as second-order cone programming (SOCP) which can efficiently be solved numerically by the existing polynomial convergence software packages. Numerical examples show that the joint transmitter-receiver optimization yields the lower BER compared with the MMSE receiver for both perfect channel estimation and imperfect channel estimation case
Keywords :
channel estimation; code division multiple access; error statistics; least mean squares methods; mobile radio; polynomials; radio links; transceivers; BER; MMSE joint transmitter-receiver; imperfect channel estimation; perfect channel estimation; polynomial convergence software packages; second-order cone programming; uplink MC-CDMA systems; Channel estimation; Digital signal processing; Downlink; Equations; Fading; Multiaccess communication; Multicarrier code division multiple access; Multiuser detection; OFDM; Transmitters;
Conference_Titel :
Intelligent Signal Processing and Communications, 2006. ISPACS '06. International Symposium on
Conference_Location :
Yonago
Print_ISBN :
0-7803-9732-0
Electronic_ISBN :
0-7803-9733-9
DOI :
10.1109/ISPACS.2006.364838
