Super-orthogonal convolutional coding with orthogonal pulse waveform for ultra wideband communications
Super-orthogonal convolutional coding with orthogonal pulse waveform for ultra wideband communications
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DOI：
10.1109/uwbst.2004.1320964
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发表时间：
2004-05
期刊：
影响因子：
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通讯作者：
T. Matsumoto;H. Ochiai;R. Kohno
中科院分区：
文献类型：
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作者：
T. Matsumoto;H. Ochiai;R. Kohno
超宽带（UWB）技术有望成为室内高速数据通信无线个域网（WPAN）的核心物理层技术。在传统的UWB系统中，由于发射功率的严格限制，发射机针对每个数据符号重复发送大量脉冲以获得SNR。这可以被认为是简单的重复分组码，其通常具有有限的编码增益。我们提出了一种新的UWB系统采用超正交卷积编码结合一组正交波形的基础上厄米多项式函数。将超正交卷积码与正交波形相结合，可以实现具有良好误码性能的高速数据通信。性能分析表明，在多用户和多径环境中，该方案的性能显着优于未编码的系统。
Ultra-wideband (UWB) technology is expected to serve as a core physical layer technology of the wireless personal area network (WPAN) for indoor high data rate communications. In a conventional UWB system, a transmitter sends a large number of pulses repeatedly for each data symbol to gain SNR because of the stringent limitation of the transmit power. This can be considered as a simple repetition block code, which generally has a limited coding gain. We propose a new UWB system employing super-orthogonal convolutional coding in conjunction with a set of orthogonal waveforms based on Hermite polynomial functions. Combination of the super-orthogonal convolutional code and orthogonal waveforms can effect high data rate communication with good error performance. Performance analysis shows that the proposed scheme performs significantly better than the uncoded system in a multiuser and multipath environment.