Comparison of SC-FDMA and NC-OFDM schemes for cognitive radio networks

Haizhou Gao
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引用次数: 5

Abstract

In order to implement cognitive radio (CR) in the future, the choice of a physical layer data transmission scheme is very important. In this paper, we compare two agile transmission schemes employed for CR networks: Single Carrier Frequency Division Multiple Access (SC-FDMA) and non-contiguous OFDM (NC-OFDM). First, a qualitative comparison is provided by analyzing the advantages and disadvantages of each scheme. Then the performances of both schemes are compared by simulation. The simulation results and corresponding analyses demonstrate that the performance of SC-FDMA is generally better than NC-OFDM in CR networks. Therefore, SC-FDMA can be a promising alternative to NC-OFDM for CR networks.
认知无线网络中SC-FDMA和NC-OFDM方案的比较
为了在未来实现认知无线电(CR),物理层数据传输方案的选择非常重要。本文比较了两种用于CR网络的敏捷传输方案:单载波频分多址(SC-FDMA)和非连续OFDM (NC-OFDM)。首先,通过分析各方案的优缺点,进行了定性比较。然后通过仿真比较了两种方案的性能。仿真结果和相应的分析表明,在CR网络中,SC-FDMA的性能普遍优于NC-OFDM。因此,SC-FDMA可以成为CR网络中NC-OFDM的一个有前途的替代方案。
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