Browsing by Author "Yeh, Fu-Chun"

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A Digital Golay-MPIC Time Domain Equalizer for SC/OFDM Dual-Modes at 60 GHz Band
(2013-10-01)
Liu, Wei-Chang
;
Yeh, Fu-Chun
;
Wei, Ting-Chen
;
Chan, Ching-Da
;
Jou, Shyh-Jye
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).
A SC/HSI Dual-Mode Baseband Receiver with Frequency-Domain Equalizer for IEEE 802.15.3c
(2013)
Liu, Wei-Chang
;
Yeh, Fu-Chun
;
Wei, Ting-Chen
;
Huang, Ya-Shiue
;
Liu, Tai-Yang
In this paper, an 8X-parallelism digital baseband receiver is proposed for IEEE 802.15.3c application. The baseband receiver consists of all-digital synchronization, radix-16 FFT and LS-LMS equalizer modules. It supports SC and HSI dual-mode in IEEE 802.15.3c with single hardware for area efficiency. The chip is implemented with 65 nm 1P9M process. The fabricated area is 12.96 mm(2) with 3463 K gate counts. The post-layout verification shows the throughput rate under QPSK modulation achieves 3.52 Gb/s and 5.28 Gb/s for SC mode (220 MHz) and HSI mode (330 MHz), respectively.
A SC/OFDM Dual Mode Frequency-Domain Equalizer for 60GHz Multi-Gbps Wireless Transmission
(2011)
Yeh, Fu-Chun
;
Liu, Tai-Yang
;
Wei, Ting-Chen
;
Liu, Wei-Chang
;
Jou, Shyh-Jye
This work proposes an adaptive frequency-domain equalizer (FDE) for single carrier and OFDM indoor over Gbps data rate wireless receiver. System simulation and specifications are based on the IEEE 802.15.3c standard. The proposed LS-LMS FDE uses low computational complexity Least-Mean-Square (LMS) algorithm with Least-Square (LS) channel estimation to accelerate the convergence speed. The FDE can be used for dual mode (SC and HSI) Wireless Personal Area Networks (WPAN) system. The simulation results show that the LS-LMS FDE can achieve 1.32*10(-4) BER in SC mode and 6.55*10(-3) in HSI mode (both uncoded) at SNR 14 dB. The total area is about 415K gate-count with 69% shared among single carrier and OFDM mode except 2 FFT. The power consumption is only 81.27 mW when working at 400MHz.
An IEEE 802.15.3c/802.11ad Compliant SC/OFDM Dual-Mode Baseband Receiver for 60 GHz Band
(2014-01-01)
Liu, Wei-Chang
;
Yeh, Fu-Chun
;
Wu, Chia-Yi
;
Wei, Ting-Chen
;
Huang, Ya-Shiue
In this paper, a dual-standard, dual-mode baseband receiver for 60 GHz wireless communication is presented. The receiver is designed to support SC and OFDM modes for both IEEE 802.15.3c and IEEE 802.11ad standards. The receiver is integrated with all-digital synchronization, radix-16 FFT, phase noise cancellation and low-complexity time-domain equalizer for line-of-sight channel application. The hardware utilization achieves 70% by leveraging hardware sharing between two modes and two standards for area efficiency. The receiver is implemented with 65 nm 1P9M process in 7.95 mm(2) core area. With feed-through architecture, the throughput rate supports up to 7.04 Gb/s and 15.84 Gb/s for SC mode (220 MHz) and OFDM mode (330 MHz), respectively.