Link Adaptation with SNR Offset for Wireless LAN Systems 


Vol. 36,  No. 10, pp. 839-846, Oct.  2011


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  Abstract

Link Adaptation should select the best modulation and coding scheme (MCS) which gives the highest throughput as channel conditions vary. Several link adaptation algorithms for wireless local area network (WLAN) have been proposed but for the future WLAN systems such as 802.11n system, these algorithms do not guarantee the best performance. In this paper, we propose a new link adaptation algorithm in which an MCS level is chosen by the received SNR plus the offset value obtained from the transmission results. The performance of proposed algorithm is simulated by an IEEE 802.11n system. From the analysis, we conclude the proposed algorithm performs better than the well-known link adaptation algorithms such as auto rate fallback and general SNR-based techniques. Particularly, the proposed algorithm improves throughput when the packet error ratio (PER) is constrained for fast fading channels.

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  Cite this article

[IEEE Style]

C. Kim, K. Jeong, K. Ko, J. Lee, "Link Adaptation with SNR Offset for Wireless LAN Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 10, pp. 839-846, 2011. DOI: .

[ACM Style]

Chanhong Kim, Kyowon Jeong, Kyeongjun Ko, and Jungwoo Lee. 2011. Link Adaptation with SNR Offset for Wireless LAN Systems. The Journal of Korean Institute of Communications and Information Sciences, 36, 10, (2011), 839-846. DOI: .

[KICS Style]

Chanhong Kim, Kyowon Jeong, Kyeongjun Ko, Jungwoo Lee, "Link Adaptation with SNR Offset for Wireless LAN Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 10, pp. 839-846, 10. 2011.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880