Ranging Performance Enhancement by Successive Interference Cancellation in Multiuser M-WiMAX System 


Vol. 34,  No. 12, pp. 998-1005, Dec.  2009


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  Abstract

In the uplink of OFDMA (Orthogonal Frequency Division Multiple Access) based M-WiMAX (Mobile-Worldwide Interoperability for Microwave Access) system, linear phase shift is caused by signals transmitted from multiuser with different delay time and thus, MAI (Multiple Access Interference) occurs. MAI degrades the performance of ranging code detection and delay time estimation in the uplink. Therefore, in this paper, we propose ranging algorithm, applying SIC (Successive Interference Cancellation) to the conventional ranging algorithm, to minimize MAI and to improve ranging performance. The proposed ranging algorithm is verified through the Monte Carlo simulation, which shows the improved performance of ranging code detection and delay time estimation compared to the conventional algorithms. Through compared with random access of the 3GPP LTE, we can know limit of ranging performance.

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  Cite this article

[IEEE Style]

J. Kim and K. Chang, "Ranging Performance Enhancement by Successive Interference Cancellation in Multiuser M-WiMAX System," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 12, pp. 998-1005, 2009. DOI: .

[ACM Style]

JongHun Kim and KyungHi Chang. 2009. Ranging Performance Enhancement by Successive Interference Cancellation in Multiuser M-WiMAX System. The Journal of Korean Institute of Communications and Information Sciences, 34, 12, (2009), 998-1005. DOI: .

[KICS Style]

JongHun Kim and KyungHi Chang, "Ranging Performance Enhancement by Successive Interference Cancellation in Multiuser M-WiMAX System," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 12, pp. 998-1005, 12. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880