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【文件名】:06524@52RD_MIMO_overview.rar
【格 式】:rar
【大 小】:662K
【简 介】:High data rate wireless communications, nearing 1-Gb/s
transmission rates, is of interest in emerging wireless
local area networks (WLANs) and home audio/visual
(A/V) networks. Currently, WLANs offer peak rates of
10 Mb/s, with 50–100 Mb/s becoming available soon.
However, even 50 Mb/s is inadequate when faced with the rates, is of interest in emerging wireless local area networks
and home audio/visual networks. Designing very high speed
wireless links that offer good quality-of-service and range capability
in non-line-of-sight (NLOS) environments constitutes a significant
research and engineering challenge. Ignoring fading in NLOS
environments, we can, in principle, meet the 1-Gb/s data rate requirement
with a single-transmit single-receive antenna wireless
system if the product of bandwidth (measured in hertz) and spectral
efficiency (measured in bits per second per hertz) is equal to 109. As
we shall outline in this paper, a variety of cost, technology and regulatory
constraints make such a brute force solution unattractive if
demand for higher access speeds due to the increase in
rich media content and competition from 10-Gb/s wired
LANs. Additionally, future home A/V networks will be
required to support multiple high-speed high-definition
television (HDTV) A/V streams, which again demand near
1-Gb/s data rates. Another challenge faced by WLANs and
home A/V environments as well as outdoor wireless wide
area network (WWAN) systems for fixed/nomadic access
is non-line-of-sight (NLOS) propagation, which induces
random fluctuations in signal level, known as fading.
【目 录】:
I. INTRODUCTION
II. BUILDING GIGABIT WIRELESS LINKS
III. MIMO CHANNEL MODEL
IV. CAPACITY OF MIMO CHANNELS
V. MIMO SIGNALING
VI. MIMO RECEIVER ARCHITECTURES
VII. FUNDAMENTAL PERFORMANCE LIMITS
VIII. MIMO-OFDM
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