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In this paper, we consider detection for DFT-spread OFDM based 3GPP long term evolution (LTE) uplink transmission, where multiuser multiple-input multiple-output (MUMIMO) technique is employed. We propose an iterative detection method, in which soft interference cancellation based on sorted QR decomposition of frequency domain channel matrix. We show that the new iterative detection has lower computational...
In this paper, we address the preamble-based channel estimation problem for orthogonal frequency-division multiplexing (OFDM) systems using multiple amplify-and-forward (AF) relays. We first establish a linear minimum mean-square-error (LMMSE) channel estimator which directly estimates the overall channels from the source to the destination. Then, based on the assumption that the channel correlations...
Notice of Violation of IEEE Publication Principles"A Simple Subspace-Based Blind Channel Estimation Technique for OFDM Systemsby Shi Biao, Tang Zhen-jun, Li Xian-hua, Jiang Shi-jin, and Yu Xin-huain the Proceedings of the International Conference on Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007, pp.236-241, Sept. 2007After careful and considered review of the content...
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