Title :
Joint Power and Rate Allocation Algorithm with MMSE Receiver for MC-CDMA Systems
Author_Institution :
Dept. of Commun. Eng., Beijing Inst. of Petrochem. Technol., Beijing, China
Abstract :
A combined power control and data rate adjustment scheme using minimum mean square error (MMSE) multi-user receiver for multi-carrier code division multiple access (MCCDMA) system uplink is proposed. The proposed algorithm can guarantee target SIR´S while keeps transmit power of every subcarriers at the minimum level and faster convergence, resulting an optimal overall system performance. Computer simulation is performed to show that the proposed scheme is appropriate and the optimization algorithm is effective and correct. Simulation results show that, using the proposed algorithm, the capacity of MC-CDMA system and the speed of convergence outperform that of obtained using the traditional methods.
Keywords :
code division multiple access; least mean squares methods; optimisation; radio receivers; MC-CDMA system; MMSE receiver; code division multiple access; computer simulation; data rate adjustment scheme; minimum mean square error methods; multicarrier code division multiple access system; multiuser receiver; optimization algorithm; power allocation algorithm; power control; rate allocation algorithm; Convergence; Fading; Frequency; Interference; Mean square error methods; Multicarrier code division multiple access; Power control; Robustness; Signal processing algorithms; Spread spectrum communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302758
