Analog-to-digital and digital-to-analog conversion devices for signals with very large bandwidth are not always available due to technical or cost issues. This limits the realization of very high data-rate digital communication systems. In this paper, we propose a dual pulse shaping (DPS) transmission scheme, which can achieve full Nyquist rate transmission with only a half of the sampling rate for each of the two data streams. Two classes of ideal complementary Nyquist pulses are formulated assuming raised-cosine (RC) pulse shaping. The condition for cross-symbol interference (CSI) free transmission is derived and validated for the proposed pulses. Structures of the DPS transmitter and receiver are described and low-complexity equalization techniques tailored to DPS are proposed. With DPS, a millimeter wave system with commercially available and affordable data conversion devices is exemplified for achieving high-speed low-cost wireless communications. Simulation results with two sets of practical dual spectral shaping pulses are provided. The results verify the effectiveness of the proposed scheme, with comparison to the benchmark conventional Nyquist pulse shaping system.

中文翻译：

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高速宽带无线通信系统的双脉冲整形传输和均衡

由于技术或成本问题，用于具有非常大带宽的信号的模数和数模转换设备并不总是可用。这限制了非常高数据速率数字通信系统的实现。在本文中，我们提出了一种双脉冲整形（DPS）传输方案，该方案可以实现全奈奎斯特速率传输，对于两个数据流中的每一个，只需一半的采样率。假设升余弦 (RC) 脉冲整形，制定了两类理想的互补奈奎斯特脉冲。为建议的脉冲导出并验证了无交叉符号干扰 (CSI) 传输的条件。描述了 DPS 发射机和接收机的结构，并提出了适合 DPS 的低复杂度均衡技术。有了DPS，毫米波系统具有商用且价格合理的数据转换设备，用于实现高速低成本无线通信。提供了两组实际双频谱整形脉冲的仿真结果。与基准常规奈奎斯特脉冲整形系统相比，结果验证了所提出方案的有效性。