基于脉冲位置的多址啁啾扩频技术性能分析

Ádám Knapp, L. Pap
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引用次数: 4

摘要

本文提出了一种基于啁啾扩频(CSS)传输的新型无线通信系统。应用的调制方案扩展为脉冲位置调制(PPM),以同时传输多个移动终端的数据。提出的系统是一种低功耗广域网(LPWAN),提供非常可靠和鲁棒的传输,特别是对于高速或远距离移动的终端,但具有有限的吞吐量。这些特性使它成为这种通信环境的完美候选者,其中传输控制或其他关键信息是必要的。对瑞利衰落信道中的瞬时误码率和平均误码率进行了广泛的分析研究。数值结果表明,基于脉冲位置的啁啾扩频多址(PP-CSS-MA)技术能够提供比原始CSS传输更高的数据速率,而只需略微提高信噪比即可达到相同的误码率(SER)。此外,当采用更高的数据速率时,平均传输功率几乎没有增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance analysis of pulse position based chirp spread spectrum technique for multiple access
The paper presents a new wireless communication system using Chirp Spread Spectrum (CSS) transmission. The applied modulation scheme is extended with Pulse Position Modulation (PPM) to transmit data for multiple mobile terminals simultaneously. The proposed system is a Low-Power Wide-Area Network (LPWAN) providing very reliable and robust transmission, especially for terminals moving with high speeds or at long range, but has limited throughput. These features makes it a perfect candidate for such communication environments, where transmitting control or other critical information is necessary. The extensive analytical investigations are also presented regarding to the instantaneous and average symbol-error rate (SER) in Rayleigh fading channel. The numerical results show that the Pulse Position based Chirp Spread Spectrum for Multiple Access (PP-CSS-MA) technique is able to provide higher data rates comparing to the original CSS transmission, while only a slight increase of SNR is requied to achieve the same Symbol-Error Rate (SER). Furthermore, the average transmission power barely increases when applying higher data rates of PP-CSS-MA.
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