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Channel Estimation & Equalization for WiMAX

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Channel Estimation & Equalization for WiMAX


The Altera® channel estimation and equalization modules for mobile
worldwide interoperability for microwave access (WiMAX) can be used
to accelerate the development of mobile broadband wireless basestations
based on the IEEE 802.16e-2005 standard [1].
f For more information on IEEE 802.16e-2005, refer to the IEEE Standard for
Local and Metropolitan Area Networks Part 16: Air Interface for Fixed and
Mobile Broadband Wireless Access Systems, December 2005.
This application note describes a reference design that demonstrates how
you can achieve the complex algorithmic functionality and advanced
scheduling that is required for these functions, using Altera® software
design tools and Stratix® III FPGAs.
WiMAX is a wireless broadband access technology compatible with fixed and mobility services. The WiMAX physical layer is based on OFDM / OFDMA technologies. This paper analyzes the distribution of Fourier Rays with various modulation frequencies (fm) by varying the number of frequency samples. The minimum quadratic channel (LS) and minimum mean square error (LMMSE) estimators are compared in terms of BER, SNR and MSE (Mean Square Error) by varying the channel length. Blind channel equalization is analyzed using the algorithms CMA (Constant Module Algorithm) and LMS (Minimum Minimum Square) in terms of convergence rate by varying the smoothing length of the channel. The results showed that without BER channel estimation it is almost constant for all modulation schemes.

Marked Categories : ppt for equalization for wimax, wimax topic seminar, wimax seminar paper, seminar topic on wimax, channel estimation,

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