Title :
BER constraint based power allocation for downlink MC-CDMA systems with linear MMSE receiver
Author :
Zhe Cao ; Jun-Bo Wang ; Xiao-Yu Dang ; Jin-yuan Wang ; Yuan Jiao ; Chen, Ming ; Bing Liu
Author_Institution :
Coll. of Inf. Sci. & Technol., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
To facilitate the efficient allocation of limited transmit power, a bit error rate (BER) constraint based power allocation scheme is proposed in this paper for the downlink of multi-carrier code division multiple access (MC-CDMA) systems with linear minimum mean square error (MMSE) receiver. According to the instantaneous channel conditions, the proposed scheme can adaptively allocate the required minimum transmit power on each channel to meet the BER constraint. The simulation results show that the proposed scheme is efficient in reducing the transmit power while meeting BER constraint, and thereby improve the system performance.
Keywords :
code division multiple access; error statistics; least mean squares methods; radio links; radio receivers; wireless channels; BER constraint; bit error rate; downlink MC-CDMA system; instantaneous channel condition; linear MMSE receiver; linear minimum mean square error; multicarrier code division multiple access; power allocation; Receivers; Transmitters;
Conference_Titel :
Communication Technology (ICCT), 2010 12th IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6868-3
DOI :
10.1109/ICCT.2010.5688497
