A digital golay-MPIC time domain equalizer for SC/OFDM dual-modes at 60 GHz band

Wei Chang Liu, Fu Chun Yeh, Ting Chen Wei, Ching Da Chan, Shyh-Jye Jou

    Research output: Contribution to journalArticlepeer-review

    20 Scopus citations

    Abstract

    In this paper, a digital time domain equalizer (TDE) for 60 GHz radio frequency transmission systems is presented. Significantly,the TDE supports both single carrier (SC) and orthogonal frequency-division multiplexing (OFDM) operation modes for digital baseband receiver. In order to improve the performance, the proposed TDE adopts Golay sequence aided one-shot channel estimation and modified multi-path interference cancellation (MPIC) equalization. Targeting on the line-of-sight (LOS) channel characteristic, MPIC is simplified with single-tap for complexity reduction. From the area efficiency point of view, both SC and OFDM modes are designed within a single hardware to yield 99% of area sharing. The Golay-MPIC TDE structure is realized as feed-forward data path with 8X-parallelism to achieve 2.64 GS/s at 330 MHz clock rate. The Golay-MPIC TDE is fabricated as a part of a digital baseband with 65 nm 1P9M general purpose process. The area of Golay-MPIC TDE occupies 1.05 {\rm mm}2 with 405 K gate counts. Besides, the power dissipations for SC and ODFM modes are 56.71 mW@220 MHz (1 V) and 91.29 mW@330 MHz (1.1 V), respectively. Finally, the chip can provide the maximum throughput 15.84 Gb/s (2.64 GS/s with 64-QAM modulation).

    Original languageEnglish
    Article number6484199
    Pages (from-to)2730-2739
    Number of pages10
    JournalIEEE Transactions on Circuits and Systems I: Regular Papers
    Volume60
    Issue number10
    DOIs
    StatePublished - 26 Mar 2013

    Keywords

    • 60 GHz
    • 802.15.3c
    • Dual modes
    • OFDM
    • SC
    • time domain equalizer
    • WPAN

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