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
File
Title
Stochastic Method of Determining Substream Modulation Levels for MIMO Eigenbeam Space Division Multiplexing
Author
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
Subject
mobile radio propagation
adaptive modulation
multipath environments
ray tracing
MIMO
E-SDM
Abstract

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.

Description Peer Reviewed
Journal Title
IEICE TRANSACTIONS on Communications
Volume
E89-B
Issue
1
Spage
142
Epage
149
Published Date
2006-01-01
Publisher
電子情報通信学会(IEICE)
ISSN
1745-1345(online)
0916-8516(print)
NCID
AA10826261
Language
eng
NIIType
Journal Article
Text Version
出版社版
Rights
copyright©2006 IEICE
Relation URL
Old URI
Set
hiroshima-cu