Wireless Communications and Multitaper Analysis: Applications to Channel Modelling and Estimation
Year: 2010
Type: book-chapter
Abstract: In this Chapter we have presented a novel approach to modelling MIMO wireless communication channels. At first, we have argued that in most general settings the distribution of the in-phase and quadrature components are Gaussian but may have different variance. This was explained by an insufficient phase randomization by small scattering areas. This model leads to a non-Rayleigh/non-Rice distribution of magnitude and justifies usage of such generic distributions as Nakagami or Weibull. It was also shown that additional care should be taken when modelling specular components in MIMO settings. Furthermore, based on the assumption that the channel is formed by a collection of relatively small but non-point scatterers, we have developed a model and a simulation tool to represent such channels in an orthogonal basis, composed of modulated prolate spheroidal sequences. Finally MDPSS frames are proposed for estimation of fast fading channels in order to preserve sparsity of the representation and enhance the estimation accuracy. The members of the frame
Source: InTech eBooks
DOI: 10.5772/7696
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W1565194132