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首页> 外文期刊>Radioelectronics and Communications Systems >Pergroup and Joint Optimization of Max-Dmin Precoder for MIMO with LDPC Coding Using QAM Modulation
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Pergroup and Joint Optimization of Max-Dmin Precoder for MIMO with LDPC Coding Using QAM Modulation

机译：使用QAM调制与LDPC编码MIMO的MAX-DMIN预编码器的Pergroc和联合优化

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Abstract MIMO technology not only offers diversity and capacity gains, but also provides higher spectral efficiency and significant link reliability over SISO systems. Many methods are developed to exploit the diversity offered by multi-antenna systems such as Alamouti code and spatial multiplexing that do not require transmitter-side channel status information (Tx-CSI). Other power allocation optimization techniques, also known as precoding, require a full or partial Tx-CSI. These techniques aim to transform the signal before transmission according to different criteria, among which the minimal Euclidean distance seems to be very effective and continues to interest the researchers. Given perfect channel state information at both sides of the communication, we propose in this paper a novel design of wireless transmission schemes that joint the minimal Euclidean distance precoder and error correction coding based on the non-binary low-density parity-check code (NB-LDPC), to finally determine a power allocation optimization solution that adapts a linear precoding block to an NB-LDPC encoded MIMO transmission. In this paper we use a quadrature amplitude modulation (QAM), over a Rayleigh fading channel with a maximum likelihood detection. Simulations results in term of bit error rate confirmed that NB-LDPC codes are particularly well suited to be jointly used with precoding schemes based on the maximization of the minimum Euclidean distance criterion.
机译：摘要MIMO技术不仅提供多样性和容量收益，而且还提供了较高的SISO系统的光谱效率和显着的联系可靠性。开发了许多方法以利用多天线系统提供的多样性，例如Alamouti代码和不需要发送器侧通道状态信息（TX-CSI）的空间复用。其他功率分配优化技术，也称为预编码，需要完整或部分TX-CSI。这些技术旨在根据不同的标准在传输之前转换信号，其中最小的欧几里德距离似乎非常有效，并且继续利益研究人员。在通信的两侧提供完美的频道状态信息，我们提出了一种基于非二进制低密度奇偶校验码的最小欧几里德距离预编码器和纠错编码的无线传输方案的新颖设计（NB -LDPC），最终确定适应线性预编码块的功率分配优化解决方案，以向NB-LDPC编码的MIMO传输。在本文中，我们使用具有最大似然检测的瑞利衰落通道上的正交幅度调制（QAM）。朝向误码率的仿真结果证实，基于最小欧几里德距离标准的最大化，Nb-LDPC码特别适合于与预编码方案共同使用。

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