naa a22 4500 510792847 CHVBK 20180411083325.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11277-012-0862-5 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0862-5 Optimal Reference Vector Selection Algorithm in Subspace Interference Alignment to Maximize System Throughput [Elektronische Daten] [DongKeol Han, Bing Hui, KyungHi Chang, Bontae Koo] Arbitrary reference vectors have been adopted in conventional subspace alignment as transmitting vectors at the transmitter side. Inter-cell interference among users can be eliminated using orthogonal vectors to the chosen reference vectors at the receiver side. However, in this case, the sum-rate varies using different reference vectors, even though the channel values remain constant, and vice versa. In this paper, we analyzed the variation of sum-rate corresponding to reference vectors. An optimal reference vector selection algorithm based on subspace interference alignment is proposed to increase multi-cell capacity. The proposed algorithm adopts reference vectors with small variance. Simulation results show that the proposed algorithms provide about 50 % higher sum-rate than does the conventional subspace interference alignment algorithm. Springer Science+Business Media New York, 2012 Interference alignment nationallicence Inter-cell interference nationallicence Reference vector nationallicence Sum-rate nationallicence Han DongKeol The Graduate School of IT and Telecommunications, Inha University, 253 Yonghyun-Dong, Nam-Gu, 402-751, Incheon, Korea aut Hui Bing The Graduate School of IT and Telecommunications, Inha University, 253 Yonghyun-Dong, Nam-Gu, 402-751, Incheon, Korea aut Chang KyungHi The Graduate School of IT and Telecommunications, Inha University, 253 Yonghyun-Dong, Nam-Gu, 402-751, Incheon, Korea aut Koo Bontae System SoC Research Department, ETRI, Daejeon, Korea aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/2(2013-07-01), 1085-1094 0929-6212 71:2<1085 2013 71 11277 https://doi.org/10.1007/s11277-012-0862-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0862-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Han DongKeol The Graduate School of IT and Telecommunications, Inha University, 253 Yonghyun-Dong, Nam-Gu, 402-751, Incheon, Korea aut NATIONALLICENCE 700 1- Hui Bing The Graduate School of IT and Telecommunications, Inha University, 253 Yonghyun-Dong, Nam-Gu, 402-751, Incheon, Korea aut NATIONALLICENCE 700 1- Chang KyungHi The Graduate School of IT and Telecommunications, Inha University, 253 Yonghyun-Dong, Nam-Gu, 402-751, Incheon, Korea aut NATIONALLICENCE 700 1- Koo Bontae System SoC Research Department, ETRI, Daejeon, Korea aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/2(2013-07-01), 1085-1094 0929-6212 71:2<1085 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer