Spectrum Sensing by Parallel Pairs of Cross-Correlators and Comb Filters for OFDM Systems With Pilot Tones

被引：21
作者：
Hong, Eonpyo [1 ]
Kim, Kiseon [2 ]
Har, Dongsoo [3 ]
机构：
[1] Agcy Def Dev, Taejon 305152, South Korea
[2] Gwangju Inst Sci & Technol, Sch Informat & Commun, Dept Nanobio Mat & Elect, Kwangju 500712, South Korea
[3] Gwangju Inst Sci & Technol, Sch Informat & Commun, Dept Informat & Commun, Kwangju 500712, South Korea
来源：
IEEE SENSORS JOURNAL | 2012年 / 12卷 / 07期
基金：
新加坡国家研究基金会;
关键词：
Cognitive radio; cross-correlation detection; orthogonal frequency division multiplexing; spectrum sensing;
D O I：
10.1109/JSEN.2012.2188792
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes a new spectrum sensing method for orthogonal frequency division multiplexing (OFDM) systems with pilot tones for equalization convenience. The time-domain signal cross-correlation (TDSC) method exploits the periodic feature of pilot signals embedded in time-domain OFDM signals, while random data signals deteriorate the detection performance. The new spectrum sensing method employs parallel pairs of cross-correlators and comb filters, reducing the effect of random data signals by comb filters. Simulation results of the proposed method demonstrate that the sensing performance for any given misdetection probability is improved by around 1.2 dB in SNR over the TDSC method.
引用
收藏
页码：2380 / 2383
页数：4
相关论文
共 6 条
1