Vector Wideband Indoor Channel Modeling and its Applications to WLAN and Multiple Antenna Elements Systems
Date Issued
2005
Date
2005
Author(s)
You, Zong-Hua
DOI
en-US
Abstract
In this thesis we propose a vector wideband indoor channel model which can be employed by systems with closely spaced multiple antenna elements. This channel model is based on the single cluster Saleh-Valenzuela (S-V) model and described by the parameter set { , , } which are respectively the amplitude difference of the direct path and the start point of the multipath regression line, the slope of the regression line, and the mean arrival rate. The procedure to extract the channel parameters is also proposed and verified. Then, we use this channel model to discuss the channel characteristics and transmission performance of multi-antenna systems employing switch beamforming or spatial multiplexing for different channel parameters.
The switch beamforming technique can reduce the minimum required signal to noise ratio (SNR) even though the direct path is almost blocked. We found that the minimum required SNR is smaller when the is getting greater, the slope of the regression line is getting larger, and the mean arrival rate is getting smaller. However, the spatial multiplexing technique has the opposite result, i.e. the richer the multipath components, the smaller the SNR. In addition, when the environment has poor multipath components, the transmission performance of systems employing spatial multiplexing may be worse than that of single-input single-output (SISO) systems.
Subjects
室內通道模型
多輸入多輪出
波束型成
空間多工
indoor channel model
MIMO
beamforming
spatial multiplexing
Type
thesis
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