In this paper, Orthogonal Space Time Block Coding (OS-TBC) is combined with linear preceding matrices to improve the exploitation of the different diversities for a mul-ticarrier transmission. The linear preceding matrices based on Hadamard construction are proposed where a simple linear de-precoder can be chosen at the receiver part which performs closely to the Maximum Likelihood (ML) global preceded OSTBC decoder. The system is generalized to different numbers of transmit antennas and different sizes of preceding matrices. Performance results have been obtained in theoretical and real channel environments. It is shown that the combined scheme efficiently exploits the space, time and frequency diversities while using a linear decoder. This system leads to an OSTBC with maximal diversity for more than two antennas when a Zero Forcing (ZF) or a Minimum Mean Square Error (MMSE) equalizer is chosen.
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机译：在本文中，正交空间时间块编码（OS-TBC）与线性前一矩阵组合，以改善用于MUL-Ticarrier传输的不同多样性的开发。提出了基于HATAMARD结构的线性前一矩阵，其中可以在接收器部分中选择简单的线性去预编码器，该接收器部分紧密地执行最大似然（ML）全局前面的OSTBC解码器。该系统广泛地推广到不同数量的发射天线和不同尺寸的前面矩阵。在理论和真实渠道环境中获得了性能结果。结果表明，组合方案在使用线性解码器的同时有效地利用空间，时间和频率分集。 This system leads to an OSTBC with maximal diversity for more than two antennas when a Zero Forcing (ZF) or a Minimum Mean Square Error (MMSE) equalizer is chosen.
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