Stochastic Method of Determining Substream Modulation Levels for MIMO Eigenbeam Space Division Multiplexing

URI http://harp.lib.hiroshima-u.ac.jp/hiroshima-cu/metadata/4061
ファイル
タイトル
Stochastic Method of Determining Substream Modulation Levels for MIMO Eigenbeam Space Division Multiplexing
著者
氏名 TAKAHASHI Satoshi
ヨミ タカハシ サトシ
別名 高橋 賢
氏名 AHN Chang-Jun
ヨミ アン チャンジュン
別名 安 昌俊
氏名 HARADA Hiroshi
ヨミ ハラダ ヒロシ
別名 原田 博司
キーワード
mobile radio propagation
adaptive modulation
multipath environments
ray tracing
MIMO
E-SDM
抄録

Multiple-input multiple-output (MIMO) eigenbeam space division multiplexing that uses adaptive modulations for substreams is a promising technology for improving transmission capacity. A fundamental drawback of this approach is that the modulation levels determined from the carrier-to-noise ratio at each substream are sometimes overly optimistic so the use of these modulation levels results in transmission errors and diminished transmission performance. A novel method of determining substream modulation levels is proposed that alleviates this degradation. In the proposed method, the expected bit error rates for possible modulations of each substream are calculated from delay profiles. Simulation results indicate that transmission capacity is improved by 30% using the new method compared with the conventional method.

査読の有無
掲載雑誌名
IEICE TRANSACTIONS on Communications
E89-B
1
開始ページ
142
終了ページ
149
出版年月日
2006-01-01
出版者
電子情報通信学会(IEICE)
ISSN
1745-1345(online)
0916-8516(print)
NCID
AA10826261
本文言語
英語
資料タイプ
学術雑誌論文
著者版フラグ
出版社版
権利情報
copyright©2006 IEICE
関連URL
旧URI
区分
hiroshima-cu