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Orthogonal Frequency Division Multiple Access in WiMAX and LTE - A Comparison

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Executive Summary

Orthogonal Frequency Division Multiple Access (OFDMA) has been adopted by all the proposals which have been considered for the Fourth Generation (4G) wireless technologies. Specifically, the two main contenders in the 4G marketplace are likely to be evolutions of WiMAX and LTE. In this paper, the authors compare the use of OFDMA in these standards. This IEEE 802.16e based WiMAX and 3GPP based LTE are the two standards that are likely to dominate the 4G wireless landscape. Both use several common technologies with subtle differences in the approach. One of the common technologies is Orthogonal Frequency Division Multiple Access (OFDMA).

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