Title :
An Adaptive Resource Allocation Algorithm Based on Spatial Subchannel in Multiuser MIMO/OFDM Systems
Author :
Xiaofeng Lu ; Zan Li ; Jueping Cai ; Xiaojun Chen
Author_Institution :
State Key Lab. of Integrated Services, Networks Xidian Univ., Xian
Abstract :
Spatial subchannels in multiuser multiple-input multiple-output/orthogonal frequency-division multiplexing (MIMO/OFDM) systems are invested. With the goal of maximizing the overall system throughput, we derive the criterion of subcarrier allocation and introduce an adaptive resource allocation algorithm. Furthermore, a time-frequency blockwise loading design which may decrease the computational complexity is suggested. The simulation results show that the algorithm can achieve good performance and high transmission rate efficiently.
Keywords :
MIMO communication; OFDM modulation; computational complexity; multiuser channels; resource allocation; OFDM systems; adaptive resource allocation; computational complexity; multiuser MIMO systems; spatial subchannel; Eigenvalues and eigenfunctions; Frequency conversion; Intserv networks; Laboratories; MIMO; Matrix decomposition; OFDM; Resource management; Throughput; Time frequency analysis;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.850
