A low-overhead interference canceller for high-mobility STBC-OFDM systems

Hsiao Yun Chen, Wei Kai Chang, Shyh-Jye Jou

    研究成果: Article同行評審

    1 引文 斯高帕斯(Scopus)

    摘要

    This paper proposes a low-overhead space-time block code (STBC) interference canceller for high-mobility STBC-orthogonal frequency division multiplexing (STBC-OFDM) systems. The proposed STBC interference canceller combined with the two-stage channel estimator can be applied to wireless metropolitan area network (WMAN), like IEEE 802.16e system. At the vehicle speeds of 240 km/hr for 16 quadrature amplitude modulation (16 QAM), the bit error rate (BER)can be improved about 10 times of that just using the two-stage channel estimator. The proposed design is implemented in 90 nm CMOS technology.The gate count is 109.3 K, and the power dissipation is 1.45 mW at83.3 MHz operation frequency with 1 V power supply. However, up to 61% hardware can be reused from the existed two-stage channel estimator design. After reusing, the proposed STBC interference canceller requires only 42.2 K gates, which is 4.9% overhead of the two-stage channel estimator.

    原文English
    文章編號6481474
    頁(從 - 到)2763-2773
    頁數11
    期刊IEEE Transactions on Circuits and Systems I: Regular Papers
    60
    發行號10
    DOIs
    出版狀態Published - 26 3月 2013

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