An Early Stopping Criterion for Turbo Processing of MIMO-OFDM in IEEE 802.16e Mobile WiMax System 


Vol. 32,  No. 6, pp. 537-543, Jun.  2007


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  Abstract

In this paper, we propose a new stopping criterion for the turbo processing (Turbo-BLAST) of MIMO-OFDM system. To reduce the high computational complexity of turbo-BLAST, it is desirable to lessen the outer-loop iteration number. In a system such as IEEE 802.16e Mobile WiMax, no CRC bits are available except the last encoding packet of a transmitted burst, so early stopping criteria without the help of CRC bits are needed. The proposed criterion counts the sign differences between received parity bits and the re-encoded parity bits from received information bits. With the tail-biting code which is accepted for IEEE 802.16e, a method that the re-encoder operates at half complexity is also proposed. Computer simulations show that the proposed stopping criterion approaches the performance of GENIE aided criterion with less average number of iterations than the other early stopping criteria.

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  Cite this article

[IEEE Style]

J. Y. Hwang, D. Cho, K. Whang, "An Early Stopping Criterion for Turbo Processing of MIMO-OFDM in IEEE 802.16e Mobile WiMax System," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 6, pp. 537-543, 2007. DOI: .

[ACM Style]

Jong Yoon Hwang, Dong-Kyoon Cho, and Keum-Chan Whang. 2007. An Early Stopping Criterion for Turbo Processing of MIMO-OFDM in IEEE 802.16e Mobile WiMax System. The Journal of Korean Institute of Communications and Information Sciences, 32, 6, (2007), 537-543. DOI: .

[KICS Style]

Jong Yoon Hwang, Dong-Kyoon Cho, Keum-Chan Whang, "An Early Stopping Criterion for Turbo Processing of MIMO-OFDM in IEEE 802.16e Mobile WiMax System," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 6, pp. 537-543, 6. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880