Browsing by Author "Lin, Li-Hsieh"

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A novel application of LDPC-based decoder for WiMAX dual-mode inner encoder
(2006)
Lin, Li-Hsieh
;
Wen, Kuei-Ann
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電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
LDPC codes have recently received a lot of attention by their excellent error-correcting capability and have been adopted as an optional error correct coding scheme in WiMAX (802.16e) standard for mobility. In order to the low-complexity SOC (System-on-a-chip) design and multi-mode transmitter compatible, we proposed a novel application of LDPC decoder to substitute Viterbi decoder for convolutional encoder. The main character presented in this study is that the general two-decoder structure is replaced by one decoder. Our results indicate that the proposed scheme processes nice performance for mobile WiMAX system.
An energy saving scheme for long range and high data rate wireless sensor networks
(2007)
Lin, Li-Hsieh
;
Tsou, Wen-An
;
Fan, Long-Sheng
;
Wuen, Wen-Shen
;
Wen, Kuei-Ann
For increasing demands on transceiving coverage, reliability and high resolution of sensing data in modem wireless sensor network applications, a novel digital transceiver scheme for wireless sensor node with integration of WiMAX PHY QoS, and low-density parity check (LDPC) code had been proposed. It will be 67% energy saving to support high gain sensing amplifier thus to provide high resolution digitization of sensing data. With WiMAX based regulation, 30 mile transmission range and 74Mbps data rate for long range and high data rate wireless sensor networks can be achieved.