Hybrid CNIR Estimation Method for OFDM Systems 


Vol. 32,  No. 6, pp. 544-549, Jun.  2007


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  Abstract

Carrier-to-noise and interference ratio (CNIR) measurement is important in providing accurate channel quality measurements for orthogonal frequency division multiplexing (OFDM) systems in different bit loading environments. Interference and noise power estimation for CNIR measurement may be carried out either with known data or without any prior knowledge about the transmitted data. With prior knowledge on transmitted data, better estimation can be achieved. However, this results in huge increase in system load. As for estimation methods without any prior knowledge, poor system performance results under certain circumstances. In this paper, we investigate the effect due to different interference and noise power on decision-directed (DD) CNIR estimation for OFDM systems and propose a new CNIR estimation scheme that provides optimal trade off between the performance and system load.

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  Cite this article

[IEEE Style]

B. Jeon, I. Sohn, Y. Kim, "Hybrid CNIR Estimation Method for OFDM Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 6, pp. 544-549, 2007. DOI: .

[ACM Style]

Bo-Ik Jeon, Insoo Sohn, and Young-Hoon Kim. 2007. Hybrid CNIR Estimation Method for OFDM Systems. The Journal of Korean Institute of Communications and Information Sciences, 32, 6, (2007), 544-549. DOI: .

[KICS Style]

Bo-Ik Jeon, Insoo Sohn, Young-Hoon Kim, "Hybrid CNIR Estimation Method for OFDM Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 6, pp. 544-549, 6. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880