基于自适应链路技术的快速分集复用折中算法-JournalofNortheastern.PDF

第30 卷第3期 东 北 大 学 学 报 ( 自 然 科 学 版 ) Vol30, No. 3 2 00 9 年 3 月 Journal of Northeastern U niversit ( Natural Science) Mar. 2 0 0 9 解志斌, 汪晋宽, 高 静, 王 ( , 110004) : , , , , , , , , , : ; ; ; ; ; : T N 911. 7 : A : 1005-3026( 2009) 03-0361-04 Fast Diversity-Multiplexing Tradeoff Algorithm Based on Adaptive Modulation and Power Allocation XIE Zhi-bin, WANG Jin-kuan, GA OJing, WAN G Yun ( School of Information Science Engineering , Northeastern Universit , Shen ang 110004, China. Correspondent: X IE Zh-i bin, E-mail: x ie zhibin @ 163. com) - Abstract: The characteristics of bit error rate ( BER) of a multi-antenna s stem are anal sed. Because the earlier works put stress on designing the schemes to extract either max imal diversit gain or maximal spatial multiplexing gain, but failed to take full advantage of the performance of the s stem, a multiple-input multiple-output ( M IM O) diversit -multiplexing tradeoff algorithm is proposed on the basis of adaptive allocation of code bit and pow er and, further, an algorithm w ith less computational complex it is given. Based on the BER criterion, the proposed algorithm is chosen in an appropriate mode according to the instantaneous channel state information ( CSI) and makes full use of the two gains as above to serve well the ant-i interference function w ith less computational complexit provided to adapt to practical applications. Simulation results indicated that the performance of the proposed algorithm is superior to the conventional one w ith high effectiveness and feasibilit . ey words: multiple-input multiple-outp