Paper Info
Title
Power Allocation Scheme for MIMO MC-CDMA With Two Dimensional Spreading
Abstract
In this paper, we develop a power distribution scheme for multi-input multi-output (MIMO) (1) multi-carrier (MC) code division multiple access (CDMA) systems (2)-(3) with two-dimensional spreading for wireless transmission. We propose to allocate power among symbols of the active users transmitted from multiple transmit antennas based on a heuristic expression of the bit error rate (BER). Optimization principle consists of minimizing the average BER of all users in term of channel conditions, user multiplexing and number of transmit antennas. Due to the simplicity of the approximate BER expression, we can obtain a closed form expression of the optimum power to be allocated to each user on each transmit antenna. Simulation results show significant improvement of the BER performances compared to the equal power distribution for various modulations, several encoding gains and two antenna configurations.
Year
DOI
Venue
2007
10.1109/VETECS.2007.644
VTC Spring
Keywords
Field
DocType
MIMO communication,antenna arrays,code division multiple access,error statistics,transmitting antennas,BER,MIMO MC-CDMA,bit error rate,multi-carrier code division multiple access systems,multi-input multi-output systems,multiple transmit antennas,power allocation scheme,two dimensional spreading,wireless transmission
Quadrature amplitude modulation,Computer science,Computer network,Closed-form expression,Communication channel,MIMO,Electronic engineering,Multiplexing,Code division multiple access,Orthogonal frequency-division multiplexing,Bit error rate
Conference
ISSN
ISBN
Citations 
1550-2252
1-4244-0266-2
0
PageRank 
References 
Authors
0.34
14
3
Name
Order
Citations
PageRank
Wladimir Bocquet1333.23
Kazunori Hayashi223028.52
Hideaki Sakai326277.04