Cyclic Prefix Based Cooperative Sequential Spectrum Sensing Algorithms for OFDM
Data(s) |
27/05/2010
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Resumo |
This paper considers the problem of spectrum sensing in cognitive radio networks when the primary user is using Orthogonal Frequency Division Multiplexing (OFDM). For this we develop cooperative sequential detection algorithms that use the autocorrelation property of cyclic prefix (CP) used in OFDM systems. We study the effect of timing and frequency offset, IQ-imbalance and uncertainty in noise and transmit power. We also modify the detector to mitigate the effects of these impairments. The performance of the proposed algorithms is studied via simulations. We show that sequential detection can significantly improve the performance over a fixed sample size detector. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/38974/1/Cyclic_Prefix.pdf Jayaprakasam, A and Sharma, V and Murthy, CR and Narayanan, P (2010) Cyclic Prefix Based Cooperative Sequential Spectrum Sensing Algorithms for OFDM. In: Communications (ICC), 2010 IEEE International Conference on , 23-27 May 2010 , Cape Town. |
Publicador |
IEEE |
Relação |
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5502814 http://eprints.iisc.ernet.in/38974/ |
Palavras-Chave | #Electrical Communication Engineering |
Tipo |
Conference Paper PeerReviewed |