研究者詳細 - 黒崎　正行

論文 - 黒崎　正行

分割表示222 件中 121 - 140 件目／全件表示 >>

Performance Evaluation of π/4 DQPSK Direct-conversion Wireless Communication System 査読有り

Yuji YOKOTA, Takuro YOSHIDA, Daisuke NOJIMA, Yuhei NAGAO, Masayuki KUROSAKI, Hiroshi OCHI

Proc. The 15th International Conference on Advanced Communication Technology (ICACT2012) 788 - 793 CD-ROM 2012年02月

Low Complexity Compensation of Frequency Dependent I/Q Imbalance and Carrier Frequency Offset for Direct Conversion Receivers 査読有り

Leonardo LANANTE Jr., Masayuki KUROSAKI, Hiroshi OCH

IEICE TRANSACTIONS on Communications E95-B ( 2 ) 484 - 492 2012年02月

A high throughput MAC layer for 600Mbps IEEE802.11n wireless LAN 査読有り

Khine T., Nagao Y., Kurosaki M., Ochi H.

APSIPA ASC 2011 - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011 469 - 472 2011年12月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

This correspondence presents a fast and systematic architecture for realizing an efficient 4-stream IEEE802.11n based hardware/software co-design Medium Access Control( MAC) Layer, which can achieve near theoretical MAC throughput for burst data transmission while complying with a strict channel access time requirements. As a design result, the proposed MAC system architecture can achieve 462Mbps for which 77% efficiency of maximum 4-stream Physical Layer(PHY) transmission rate 600Mbps is obtained. This result is verified with both SystemVerilog software simulation and hardware prototyping on a Xilinx FPGA board. Furthermore, a SoC architecture for one-chip implementation with MIPS/ARM/Power PC CPUs is also shown. In this SoC, IEEE802.11e as well as 11i functions are also included.

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84866882508&origin=inward

Real time 2D-DWT of JPEG 2000 for Digital Cinema using CUDA 4.0 査読有り

Inoue K., Kuroki Y., Kurosaki M., Nagao Y., Ochi H.

2011 International Symposium on Intelligent Signal Processing and Communications Systems: "The Decade of Intelligent and Green Signal Processing and Communications", ISPACS 2011 2011年12月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

The Specifications of the Digital Cinema system released by Digital Cinema Initiatives decide to encode so-called 2K or 4K images by JPEG 2000. The JPEG 2000 codec provides high compression rates and error tolerance, but this codec is burden for both encoding and decoding. The parallel computing architecture named CUDA receives a lot of attention recently. In this paper, we attempt to realize real-time implementation of the two dimensional discrete wavelet transform (2D-DWT) of JPEG 2000 by using the newest developmental environment CUDA 4.0. © 2011 IEEE.

DOI： 10.1109/ISPACS.2011.6146127

Scopus

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An ASIC implementation of puncture and spatial stream parser for MIMO Wireless LAN system 査読有り

Ardiansyah A., Nagao Y., Kurosaki M., Ochi H.

Proceedings - International Conference on Instrumentation, Communication, Information Technology and Biomedical Engineering 2011, ICICI-BME 2011 87 - 91 2011年12月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

This paper discus an ASIC implementation of puncture and SSP for MIMO IEEE 802.11n 4x4 MIMO Wireless LAN system. We also describe its receiver counterpart block, which is SSDP and Depuncture. The biggest challenge of this work is 72 modes operation that need to be supported. The design is implemented on 90nm ASIC CMOS technology. Synthesis result for puncture and SSP reveal that the logic area is 0.025 mm 2 . The correspond gates count is 4.535 KGE. Circuit power consumption is 0.736 mW. The design can work at very high frequency up to 1000MHz (1GHz). Thus, it could be implemented for very high data rate applications that use MIMO OFDM techniques up to 3,750 Mbps, such as digital cinema and HDTV over wireless transmission. Meanwhile, SSDP and Depuncture synthesis shows that the logic area is 0.0309 mm 2 which is equivalent with 5.581 gates. The maximum operating frequency is lower than its transmitter counterparts, only 250 MHz. Circuit power consumption is 0.209 mW. © 2011 IEEE.

DOI： 10.1109/ICICI-BME.2011.6108600

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84855913067&origin=inward

Low-Latency Normalization Method for Multi-User MIMO Systems Using Vector Perturbation Precoder 査読有り

Shogo Fujita, Leonardo Lanante Jr., Yuhei Nagao, Masayuki Kurosaki, Hiroshi Ochi

Proc. IEEE Third International Conference on Intelligent Networking and Collaborative Systems (INCOS 2011) CD-ROM 2011年11月

A CUDA Implementation of DWT for JPEG 2000 Codec 査読有り

Masayuki KUROSAKI, Masateru MATSUO, Yoshimatsu KUROKI, Yuhei NAGAO, Baiko Sai, Hiroshi OCHI

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences E94-A ( 11 ) 2358 - 2360 2011年11月

Power Supply Overlaid Communication System with OFDM Modulation for Robot Control 査読有り

Yusuke YAMAGUCHI, Hidetsugu KOGA, Masayuki KUROSAKI, Hiroshi OCHI

2011 International Workshop on Smart Info-Media Systems in Asia (SISA2011) CD-ROM 2011年10月

Image Transmission using Encryption Domain Authentication for Mesh Network 招待有り査読有り

Muneaki MATSUO, Masayuki KUROSAKI, Akio MIYAZAKI, Hiroshi OCHI

2011 International Workshop on Smart Info-Media Systems in Asia (SISA2011) CD-ROM 2011年10月

Joint CFO and IQ-Imbalance Compensator for Narrow-Band Wireless System 査読有り

Takuro YOSHIDA, Daisuke NOJIMA, Yuhei NAGAO, Masayuki KUROSAKI, Hiroshi OCHI

Asia Pacific Signal and Information Processing Association (APSIPA) ASC 2011 ( Thu-PM.PS3 ) CD-ROM 2011年10月

Complexity Reduction Technique of Vector Perturbation Algorithm for Multiuser MIMO Systems 査読有り

Muneaki MATSUO, Ryuta IMASHIOYA, Yuhei NAGAO, Masayuki KUROSAKI, Hiroshi OCHI

The 11th IEEE International Symposium on Communications and Information Technologies (ISCIT 2011) CD-ROM 2011年10月

LTE physical layer identity detection: Frequency vs time domain schemes 査読有り

Setiawan H., Kurosaki M., Ochi H.

IEEE International Conference on Communications 2011年09月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

Long Term Evolution (LTE) physical layer identity can be recognized either in frequency domain or time domain. In this paper we serve some comparisons in term of complexity, latency, and recognition probability. As a result, frequency domain detection has superiority on performance for SNR higher than 3dB on all channel models, as well as lower latency than time domain scheme one. However, it requires huge computation resources that might meet difficulty for mobile devices implementation. © 2011 IEEE.

DOI： 10.1109/icc.2011.5962766

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80052177952&origin=inward

High-Speed Sorted QR Decomposition for MIMO Wireless Communication Systems 査読有り

Yuya MIYAOKA, Yuhei NAGAO, Masayuki KUROSAKI, Hiroshi OCHI

IEEE Asia Pacific Wireless Communication Symposium (APWCS2011) ( 36 ) CD-ROM 2011年08月

FPGA Implementation of Joint CFO and IQ-Imbalance Compensator for Narrow-Band Wireless System 査読有り

Takuro YOSHIDA, Daisuke NOJIMA, Yuhei NAGAO, Masayuki KUROSAKI, Hiroshi OCHI

International Conference on Advanced Technologies for Communications (ATC) CD-ROM 2011年08月

Wireless Transmission of JPEG 2000 Compressed Video 査読有り

Masateru Matsuo,Ryo ito,Masayuki Kurosaki,Baiko Sai,Yoshimitsu Kuroki,Akio Miyazaki,Hiroshi Ochi

Proc. The 13th International Conference of Advanced Communication Technology (ICACT2011) ( 08A-04 ) 2011年02月

Symbol timing synchronization ISDB-T System in Multipath Fading Channel 査読有り

Nico Surantha,Tatsumi UWAI,Yuhei Nagao,Masayuki Kurosaki,Hiroshi Ochi

Proc. The 13th International Conference of Advanced Communication Technology (ICACT2011) ( 10C-01 ) 2011年02月

Non-Linear Precoding for Next Generation Multi-User MIMO Wireless LAN Systems 査読有り

Leonardo Lanante Jr.,Masayuki Kurosaki,Hiroshi Ochi

Proc. The 13th International Conference of Advanced Communication Technology (ICACT2011) ( 09A-02 ) 2011年02月

RTL Design of Joint CFO and IQ-Imbalance Compensator for Narrow-BandWireless System 査読有り国際誌

Takuro Yoshida, Daisuke Nojima, Yuhei Nagao, Masayuki Kurosaki, Hiroshi Ochi

Int. Conf. Embedded Systems and Intelligent Technology (ICESIT2011) 2011年02月

A Proposition of 600Mbps WLAN-like System with Low-Complexity MIMO Decoder for FPGA Implementation 査読有り

Wahyul Amien Syafei,Yuhei NAGAO,Msayuki KUROSAKI,Baiko SAI,Hiroshi OCHI

IEICE Transactions on Communications E94-B ( 2 ) 1745 - 1345 2011年02月

Performance Improvement Method for ISDB-T Receiver Under Fast Fading Channel 査読有り

Tatsumi UWAI,Nico Surantha,Yuhei Nagao,Masayuki Kurosaki,Hiroshi Ochi

IEEE Consumer Communications and Networking Conference (CCNC2011) 2011年01月

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