摘要(英) |
LMDS is the most obtrusive among mini-meter wave
propagation techniques. Because it can provide wideband
integrated services including two-way voice, video, and data
transmission. The asymmetry between downstream and upstream is
quite consistent with the normal data flow, particularly for
residential applications. Of course the spectrum can also be
used to provide symmetric traffic that would typically be
required for business applications.
In chapter 2, we propose a new cell planning, which suffers
less inter-cell interference in comparison with the typical
cell planning. Chapter 3 analyzes the technique of multi-mode
CDMA scheme can reduce inter-cell interference effectively in
clear air. Besides, high rainfall attenuation is a significant
challenges associated with deploying systems at Ka band.
Chapter 4 studies the multi-mode CDMA scheme is adequate in
small rain rate condition. In large rain rate situation, we can
maintain system performance by reducing cell size or by the
process of power control. Finally, chapter 5 gives the
conclusions. |
參考文獻 |
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