標題: A Bandwidth Efficient Pairing Strategy for the MIMO-OFDM Based WLANs
作者: Lee, Tsern-Huei
Hsieh, Jing-Rong
Huang, Ming-Chih
Huang, Yu-Wen
電信工程研究所
Institute of Communications Engineering
關鍵字: MIMO;Multiuser diversity;Pairing
公開日期: 2009
摘要: The advanced MIMO (multiple-input multiple-output) system can provide higher capacity gain or higher diversity gain in modern wireless networks. The capacity gain is achieved by interference cancelation technique to fully utilize the spatial degree of freedom. In a multiuser wireless system, the increased degrees of freedom provide the chance to select multiple wireless stations (STAs) to maximize the throughput. In this paper, we consider a scenario where the access point (AP) equipped with two antennas to simultaneously communicate with two STAs, each with single antenna. After obtaining the statuses of the size of buffered traffic and the achievable transmission rate, the AP should pair compatible STAs to minimize the loss of spatial degree of freedom. Therefore, three pairing algorithms are proposed and are evaluated through computer simulations. The algorithms have much less implementation complexity than the brute force pairing algorithm and achieve satisfactory performance of throughput.
URI: http://hdl.handle.net/11536/17913
ISBN: 978-1-4244-2516-7
ISSN: 1550-2252
期刊: 2009 IEEE VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5
起始頁: 2608
結束頁: 2612
Appears in Collections:Conferences Paper