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On the energy detection of unknown signals over fading channels
Abstract
This paper presents another look at the problem of energy detection of unknown signals over different fading channels. We start with the no diversity case and present some alternative closed-form expressions for the probability of detection (P/sub d/) to those recently reported in [V.I. Kostylev, May 2002]. We then investigate the system performance when different diversity schemes are employed. It is shown that there is not much improvement in the probability of detection when either the probability of false alarm (P/sub f/) exceeds 0/1 or the average signal-to-noise ratio (SNR) exceeds 20 dB. In addition, receiver operating characteristic (ROC) curves comparing the performance of equal-gain combining (EGC), selection combining (SC), and switch and stay combining (SSC) are presented. As an example, EGC introduces a gain of two orders of magnitude from the probability of miss perspective compared to the no diversity case while both SC and SSC introduce a gain of about one order of magnitude.
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Cited by
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: A survey
Akyildiz, I. F., Lee, W.-Y., Vuran, M. C., & Mohanty, S. (2006) · Computer Networks · doi:10.1016/j.comnet.2006.05.001 · Cited by 6,356
A survey of spectrum sensing algorithms for cognitive radio applications
Yucek, T., & Arslan, H. (2009) · IEEE Communications Surveys & Tutorials · doi:10.1109/surv.2009.090109 · Cited by 4,801
On the Energy Detection of Unknown Signals Over Fading Channels
Digham, F. F., Alouini, M.-S., & Simon, M. K. (2007) · IEEE Transactions on Communications · doi:10.1109/tcomm.2006.887483 · Cited by 2,101
Self-citationOptimization of cooperative spectrum sensing with energy detection in cognitive radio networks
Zhang, W., Mallik, R., & Letaief, K. (2009) · IEEE Transactions on Wireless Communications · doi:10.1109/twc.2009.12.081710 · Cited by 785
Soft Combination and Detection for Cooperative Spectrum Sensing in Cognitive Radio Networks
Ma, J., Zhao, G., & Li, Y. (2008) · IEEE Transactions on Wireless Communications · doi:10.1109/t-wc.2008.070941 · Cited by 732
Metadata
- Authors
- Digham, F. F., Alouini, M.-S., & Simon, M. K.
- Venue
- IEEE International Conference on Communications, 2003. ICC '03.
- Publisher
- IEEE
- Published
- 2004-03-30
- Volume
- 5
- Pages
- 3575-3579
- ISSN
- 1550-3607 (ISSN-L)
- OpenAlex
- W2164701487
- Cited by
- 1,102
- References
- 0
- FWCI
- 5.71
- Type
- conference paper
- Language
- en
- Open access
- closed
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- Digham, F. F., Alouini, M.-S., & Simon, M. K. (2004). On the energy detection of unknown signals over fading channels. IEEE International Conference on Communications, 2003. ICC '03. https://doi.org/10.1109/icc.2003.1204119
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