On Channel Estimation for Mobile WiMAX

ISBN-13: 9783639169539 / Angielski / Miękka / 2009 / 84 str.

Waldo Kleynhans

Opis

In mobile communication channels information symbols are transmitted through a communicationchannel that is prone to fading and multipath propagation. At the receiver, the effect of multipathpropagation is reduced by a process called channel equalization. Channel equalization relies on anaccurate estimate of the channel state information (CSI). This estimate is obtained using a channelestimation algorithm. Mobile WiMAX is a recently released technology that makes use of anorthogonal frequency division multiplexing (OFDM) based physical layer to transmit information overa wireless communication channel. In this book, frequency and time domain channel estimationmethods typically used in classical OFDM systems, using block and comb type pilot insertion schemes,were analyzed and adopted for mobile WiMAX. Least squares (LS) and linear minimum mean squareerror (LMMSE) channel estimation methods were considered in the case of block type pilot insertion.In the case of comb type pilot insertion, piecewise constant, linear, spline cubic as well as discreteWiener interpolation methods were considered.

O autorze

Waldo Kleynhans received his B.Eng and M.Eng in Electronic
Engineering from the University of Pretoria, South Africa in 2004
and 2008 respectively. His fields of interest include
telecommunications, Bayesian inference, detection and estimation.
He is currently with the council for scientific and industrial
research in South Africa.