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引用次数: 1
摘要
在过去的几年里，我们一直专注于开发DPC-OF/TDMA(动态参数控制的正交频率和时分多址)系统(Harada et al.， 2003)，目标是超过100 Mbps的数据速率。在本文中，我们扩展了DPC-OF/TDMA，以支持更高的数据速率，而其原始版本的带宽相同。改进的DPC-OF/TDMA是基于我们新提出的多层STBC OFDM(多层空时分组编码正交频分复用)方案。该方案结合了空间分集和空间复用，以利用这两种技术的优点。为了评估改进后的DPC-OF/TDMA的性能，我们在不同的MIMO天线配置下进行了仿真。由于要求PER (packet error rate)为1.0e-2，且Eb/不低于20.0dB，因此演进后的DPC-OF/TDMA在带宽为128MHz的情况下可以达到921.6Mbps的数据速率。实现的平均频谱效率为7.2bit/s/Hz。
High-Data-Rate DPC-OF/TDMA Based on Multi-Layer STBC Coded MIMO-OFDM
In the past years we have been focusing on developing DPC-OF/TDMA (dynamic parameter controlled orthogonal frequency and time division multiple access) system (Harada et al., 2003) which targets at beyond 100 Mbps data rate. In this paper, we extend DPC-OF/TDMA to support higher data rates with the same bandwidth of its original version. The evolved DPC-OF/TDMA is based on our newly proposed multi-layer STBC OFDM (multi-layer space-time block coded orthogonal frequency division multiplexing) scheme. This scheme combines the spatial diversity and spatial multiplexing in order to exploit the benefits of both techniques. To evaluate the performance of the evolved DPC-OF/TDMA, we conduct simulations under different MIMO antenna configurations. As the packet error rate (PER) is required to be 1.0e-2 with Eb/No lower than 20.0dB, the evolved DPC-OF/TDMA can reach data rate of 921.6Mbps while the bandwidth is 128MHz. The achieved average spectral efficiency is 7.2bit/s/Hz.
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