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Research on Channel Performance of MIMO System

Author: ShangZhiCheng
Tutor: XuLiQin
School: Nanjing University of Posts and Telecommunications
Course: Electromagnetic Field and Microwave Technology
Keywords: MIMO channel correlation channel capacity dual-polarized
CLC: TN919.3
Type: Master's thesis
Year: 2011
Downloads: 115
Quote: 0
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Abstract


Researches indicate that the technology of multiple-input multiple-output(MIMO) can improve the performance of wireless system prominently, it can also improve the reliability of the transmission channel to reduce bit error rate.In fading channel, MIMO technology can elevate the channel capacity manifoldly without additional bandwidth and transmission power consumptions, it can be also used to improve the transmission rate as well as the communication.First with a brief review on the properties of wireless fading channel and channel models of Multi-Input and Multi-Output system. The correlation has been discussed at the third part, and much simulations have been done about spatial correlation and polarized correlation,including the parameters angle spread(AS)and antenna spacing under different power azimuth spectrum. The last part starts with simulating the capacity of single-polarized MIMO system, taking account of spatial correlation and polarization correlation, and the parameters (such as XPR, polarized angle and so on) which have impact on capacity have been analyzed ,then the simulations about capacity of dual-polarized MIMO system have been studied , it concludes that when we take into the unfavorable conditions, the dual-polarized MIMO system has a better performance and obtains greater system capacity than the single-polarized MIMO system.

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