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In this paper, we present the baseband receiver design for IEEE 802.11ah. We study several key receiver algorithms, including coarse frequency offset estimation and coarse timing synchronization, fine frequency offset estimation, fine timing synchronization, channel estimation and MIMO equalization. For channel estimation, we propose to use decoded SIG field to improve its estimation. To further improve...
A joint order estimation criterion by combination extreme eigenvalue cost function (deduced from subspace identification) and least squares equalization is proposed, this new criterion ensures the global minimum at the correct and/or effective channel order in noiseless case. For low or moderate SNRs, the joint order estimation algorithm is able to work with short samples and ill-conditioned channels...
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