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In this paper, we consider a multiple-input-multiple-output optical wireless communication (MIMO-OWC) system suffering from log-normal fading. In this scenario, a general criterion for the design of full large-scale diversity space code (FLDSC) with the maximum likelihood (ML) detector is developed. Based on our criterion, FLDSC is attained if and only if all the entries of the space coding matrix...
In this paper, a novel distributed concatenated Alamouti code is devised for a one-way relaying network consisting of two end nodes with each having a single antenna and one relay node equipped with two antennas. With the aid of the newly developed uniquely-factorable constellation pair (UFCP) generated from square quadrature amplitude modulation (QAM) constellation and by jointly processing the noisy...
Utilizing the recently-developed unique factorization of signals and distributed Alamouti coding scheme, a distributed collaborative Alamouti space-time block code design is presented for a two-way amplify-and-forward (AF) relaying network, where both two sources and the relay are equipped with a single antenna. For such system, two asymptotic pairwise error probability (PEP) formulae are first derived...
Recently, various space-time block coding (STBC) schemes have been developed to take advantage of the MIMO communication channel. The code designs using the pair-wise error probability of the maximum likelihood (ML) detector are based mainly on the rank and the determinant criteria. In particular, the current STBC designs focus on full diversity and the non-vanishing determinant, since such codes...
In this paper, we derive the exact asymptotic pairwise error probability (PEP) of an AF half-duplex cooperative system in which the maximum likelihood detector is used. Based on our analysis and observations, we propose a unitary precoder design to improve the system performance. We first design a precoder to achieve the full diversity gain function. Then for the case of a 4-QAM signal being transmitted,...
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