Title: A Digital Golay-MPIC Time Domain Equalizer for SC/OFDM Dual-Modes at 60 GHz Band
Authors: Liu, Wei-Chang
Yeh, Fu-Chun
Wei, Ting-Chen
Chan, Ching-Da
Jou, Shyh-Jye
Department of Electronics Engineering and Institute of Electronics
Keywords: Dual modes;OFDM;SC;time domain equalizer;WPAN;60 GHz;802.15.3c
Issue Date: 1-Oct-2013
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 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).
URI: http://dx.doi.org/10.1109/TCSI.2013.2244321
ISSN: 1549-8328
DOI: 10.1109/TCSI.2013.2244321
Volume: 60
Issue: 10
Begin Page: 2730
End Page: 2739
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