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In this paper, we propose a novel preamble design of Gaussian pulses, along with a synchronization scheme, for cooperative MIMO OFDM systems. In our preamble design, the training signals of cooperating nodes are well separated from each other in both time domain and frequency domain to suppress their mutual interference in both domains, whereas they are only separated in either of the two domains...
In this paper, we propose a novel preamble design of partial Zadoff-Chu sequences, along with a synchronization scheme, for cooperative MIMO OFDM systems. In our preamble design, the training signals of cooperating terminals are well separated from each other in both time domain and frequency domain to suppress their mutual interference in both domains, whereas they are only separated in either of...
In distributed multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) systems, signals arrive at the receiver on different timing and are characterized by distinct carrier frequency offsets (CFOs), which makes synchronization rather challenging than that associated with centralized MIMO systems. Current solutions to this problem are mainly based on special preamble...
This paper proposes low-complexity joint timing synchronization and channel estimation for multiple-input multiple-output orthogonal frequency-division multiplexing systems based on maximal length sequences. Under a Rayleigh channel assumption, an optimal threshold for the proposed joint scheme is derived, and a practical suboptimal threshold that requires neither pre-simulation nor prior information...
This paper develops a joint fine timing synchronization and channel estimation scheme for multiple-input multiple-output (MIMO) systems based on a well-designed training sequence arrangement. The proposed approach generalizes a first channel tap selection scheme and presents a majority vote refinement (MVR) of the timing estimates for different transmit-receive links. The MVR fully exploits the features...
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