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arXiv 1211.4445cs.ITcs.NImath.IT
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多窄带干扰下的有效频谱共享

Efficient Spectrum Sharing in the Presence of Multiple Narrowband Interference

Demosthenes Vouyioukas

摘要:

在本文中,我们研究的频谱使用效率,通过应用宽带的方法和系统,现有的模拟系统和应用。这项工作的基本动机是定义一个有效的方式共享同一频带的模拟FM和数字扩频系统之间的共存前景。潜在的覆盖扩频(SS)系统可以在现有的窄带调频(FM)广播系统内基于若干限制而在频谱上重合,这产生了在包括无线个人和传感器网络的许多应用中使用FM无线电频带的关键动机。由于重叠的模拟FM系统,由多个窄带FM站,SS系统的性能进行了研究,以获得相关的误码率和最大可实现的数据率。SS系统使用直接序列(DS)扩频,通过具有长扩频码的最大长度伪随机序列。通过理论和基于仿真的性能分析,针对各种类型的扩频场景,针对不同的载波频率偏移(Δf)和信号干扰比,对SS信号进行评估,以便为叠加场景的未来开发和规划得出有价值的结果。

英文摘要:

In this paper, we study the spectrum usage efficiency by applying wideband methods and systems to the existing analog systems and applications. The essential motivation of this work is to define the prospective coexistence between analog FM and digital Spread Spectrum systems in an efficient way sharing the same frequency band. The potential overlaid Spread Spectrum (SS) system can spectrally coincide within the existing narrowband Frequency Modulated (FM) broadcasting system upon several limitations, originating a key motivation for the use of the FM radio frequency band in many applications, encompassing wireless personal and sensors networks. The performance of the SS system due to the overlaying analog FM system, consisting of multiple narrowband FM stations, is investigated in order to derive the relevant bit error probability and maximum achievable data rates. The SS system uses direct sequence (DS) spreading, through maximal length pseudorandom sequences with long spreading codes. The SS signal is evaluated throughout theoretical and simulation-based performance analysis, for various types of spreading scenarios, for different carrier frequency offset (Δf) and signal-to-interference ratios, in order to derive valuable results for future developing and planning of an overlay scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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