Spectrum Sensor Hardware Implementation Based on Cyclostationary Feature Detector

Majlesi Journal of Electrical Engineering

مقاله 3، دوره 5، شماره 1، خرداد 2011   

نوع مقاله: Review Article

شناسه دیجیتال (DOI): 10.1234/mjee.v5i1.355

نویسندگان

Vesa Turunen^{* 1}؛ Marko Kosunen¹؛ Sami Kallioinen¹؛ Aarno Pärssinen²؛ Jussi Ryynänen

¹Aalto University, School of Science and Technology, Department of Micro- and Nanosciences

²Nokia Research Center, Otaniemi, Espoo

چکیده

Cognitive radios utilize spectrum sensors to provide  information about the surrounding radio environment. This enables cognitive radios to communicate at the same frequency bands with existing (primary) radio systems, and thereby improve the utilization of spectral resources. Furthermore, the spectrum sensor must be able to guarantee that the cognitive radio devices do not interfere with the primary system transmissions. This paper describes a hardware implementation of a spectrum sensor based on cyclostationary feature detector, which has an improved detection performance achieved by decimation of the cyclic spectrum. Decimation also provides a simple way to control detection time and, therefore, allows trading the detection time to better probability of detection and vice versa. Implementation complexity in terms of power consumption and silicon area for a 65 nm CMOS process is evaluated. Measured detection performance is presented and detection of a 802.11g WLAN signal through air interface is demonstrated.

کلیدواژه‌ها

Technology؛ Cognitive radio؛ en؛ wireless communications؛ Cr؛ Wireless؛ spectrum sensing؛ feature detector؛ cyclostationary؛ FPGA

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