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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Information Science and Technology / Faculty of Information Science and Technology >
Peer-reviewed Journal Articles, etc >
Efficient Hybrid DFE Algorithms in Spatial Multiplexing Systems
| Title: | Efficient Hybrid DFE Algorithms in Spatial Multiplexing Systems |
| Authors: | Jiang, Wenjie Browse this author | | Asai, Yusuke Browse this author | | Aikawa, Satoru Browse this author | | Ogawa, Yasutaka Browse this author →KAKEN DB |
| Keywords: | complexity reduction | | MIMO | | spatial multiplexing | | signal detection |
| Issue Date: | 1-Feb-2009 |
| Publisher: | IEICE - The Institute of Electronics, Information and Communication Engineers |
| Journal Title: | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences |
| Volume: | E92-A |
| Issue: | 2 |
| Start Page: | 535 |
| End Page: | 546 |
| Publisher DOI: | 10.1587/transfun.E92.A.535 |
| Abstract: | The wireless systems that establish multiple input multiple output (MIMO) channels through multiple antennas at both ends of the communication link, have been proved to have tremendous potential to linearly lift the capacity of conventional scalar channel. In this paper, we present two efficient decision feedback equalization algorithms that achieve optimal and suboptimal detection order in MIMO spatial multiplexing systems. The new algorithms combine the recursive matrix inversion and ordered QR decomposition approaches, which are developed for nulling cancellation interaface Bell Labs layered space time (BLAST) and back substitution interface BLAST. As a result, new algorithms achieve total reduced complexities in frame based transmission with various payload lengths compared with the earlier methods. In addition, they enable shorter detection delay by carrying out a fast hybrid preprocessing. Moreover, the operation precision insensitivity of order optimization greatly relaxes the word length of matrix inversion, which is the most computational intensive part within the MIMO detection task. |
| Rights: | Copyright©2009 The Institute of Electronics, Information and Communication Engineers |
| Relation: | http://search.ieice.org/index.html |
| Type: | article |
| URI: | http://hdl.handle.net/2115/38895 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 小川 恭孝
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