MIMO Capacity Analysis For Spatial Channel Model Scenarios
Journal Title: IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) - Year 2018, Vol 13, Issue 4
Abstract
With the advancement of wireless communication and extensive research for new technologies for more reliable, secure and high speed connection, MIMO is coming up as the foremost competitor. In this research, we investigate MIMO system capacity using Spatial Channel Model (SCM) proposed by 3GPP3GPP2 standard for the third generation systems and compare to one major physical model i.e. the One Ring Model. Also, we contrast with a theoretical model namely independent and identically distributed (i.i.d.) model. We present a system model for investigating MIMO systems followed by detailed analysis of channel parameters and capacity analysis. A simulation tool is developed to evaluate the capacity of N-LOS MIMO systems in SCM with scenario of multipath propagation. Further, it is compared with i.i.d. and One Ring model. The study shows that the channel capacity increases in almost linear fashion with addition of number of antennas, but the rate of linearity is higher in Waterfilling schemes and comparatively lower in Equal Power schemes. For practical implementation, the compact MIMO systems are more desirable, so we investigate the effect of mutual coupling due to closely spaced antennas. This study shows that mutual coupling leads to increase in the capacity for which the spacing is less than approximately 0.4 λ.
Authors and Affiliations
Sanjay Kumar Sah, Chen Fangjiong
Keywords
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- DOI 10.9790/2834-1304010109.
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