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NC-OFDM系统的导频设计 被引量:1

Pilot Design for NC-OFDM System
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摘要 在NC-OFDM系统中,次用户不能使用主用户占用的频带,这导致了次用户频谱的非连续性。因此,对于NCOFDM系统,传统的等间隔等功率的导频设计方法不再适用。在基于信道均方误差(MSE)的准则下,提出了一种适用于NC-OFDM系统的导频设计方法。它对原有的设计方法进行改进,降低了运算复杂度,获得了更好的MSE性能和误比特率(BER)性能,仿真结果证明了该结论。 In non-contiguous orthogonal frequency-division multiplexing(NC-OFDM) system, the secondary users can' t use the frequency band already occupied by the primary users, which leads to non-contiguous frequency of the secondary users. Therefore, traditional pilot design of equal power and equal intervals is not available for NC- OFDM system. Now, the previous design is improved, decreasing the computing complexity and obtaining better MSE and BER performance. This design proves better by simulation.
作者 熊国庆
出处 《移动通信》 2013年第20期66-69,共4页 Mobile Communications
关键词 NC-OFDM 导频 信道均方误差 误比特率 NC-OFDM pilot channel MSE BER
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  • 1Hu Die, He Lianghua, Wang Xiaodong, et al. An Efficient Pilot Design Method for OFDM-Based Cognitive Radio System[J]. IEEE Transactions on Wireless Communications, 2011 (4): 1-8.
  • 2张祐昌,许小东,戴旭初.一种适用于NC-OFDM系统的次优导频设计[J].通信技术,2010,43(10):1-4. 被引量:4
  • 3Liu Jinnan, taeng Shulan, Wang Haiguang, et al. Comb- type Pilot Aided Channel Estimation in Non-contiguous OFDM Systems for Cognitive Radio[A]. IEEE International Conference on Wireless Communication, Networking, Mobile Computing[C]. Beijing, 2009: 1-4.

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