IEEE Workshop on Signal Processing Systems Design and Implementation, 2005.最新文献

Efficient design of symbol detector for MIMO-OFDM based wireless LANs 基于MIMO-OFDM的无线局域网符号检测器的高效设计

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2007-05-14 DOI: 10.1109/ICTMICC.2007.4448690

Seungpyo Noh, Yunho Jung, Jaeseok Kim

引用次数: 0

A comprehensive energy model and energy-quality evaluation of wireless transceiver front-ends 无线收发器前端综合能量模型及能量质量评价

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-12-01 DOI: 10.1109/SIPS.2005.1579876

Ye Li, B. Bakkaloglu, C. Chakrabarti

{"title":"A comprehensive energy model and energy-quality evaluation of wireless transceiver front-ends","authors":"Ye Li, B. Bakkaloglu, C. Chakrabarti","doi":"10.1109/SIPS.2005.1579876","DOIUrl":"https://doi.org/10.1109/SIPS.2005.1579876","url":null,"abstract":"As CMOS technology scales down, digital supply voltage and digital power consumption goes down. However due to dynamic range limitations, power supply and power consumption of the RF front-ends and analog sections do not scale in the same fashion. In fact, in scaled systems, the RF section of a wireless transceiver consumes more energy than the digital part. For better understanding of the design trade offs, we first develop an accurate and comprehensive energy model for the analog front-end of wireless transceivers. Next, we evaluate a single user point-to-point wireless data communication system and a multi-user CDMA based system with respect to RF front end energy consumption and communication quality. We demonstrate the effect of occupied signal bandwidth, peak-to-average ratio (PAR), symbol rate, constellation size, and pulse-shaping roll-off factor on single user system, and the effect of number of users and multiple access interference (MAI) on CDMA based multi-user system. For a given quality specification, we show how the energy consumption can be reduced by adjusting one or more of these parameters.","PeriodicalId":436123,"journal":{"name":"IEEE Workshop on Signal Processing Systems Design and Implementation, 2005.","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128380714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

Low-bandwidth dynamic aspect ratio region-based motion estimation 基于低带宽动态宽高比区域的运动估计

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-12-01 DOI: 10.1109/SIPS.2005.1579900

A. Beric, B. van der Waal, R. Sethuraman, G. de Haan

{"title":"Low-bandwidth dynamic aspect ratio region-based motion estimation","authors":"A. Beric, B. van der Waal, R. Sethuraman, G. de Haan","doi":"10.1109/SIPS.2005.1579900","DOIUrl":"https://doi.org/10.1109/SIPS.2005.1579900","url":null,"abstract":"In the domain of motion estimation based applications, in order to keep the bandwidth requirements low, the usage of multiple levels of memory hierarchy is a necessity. We analyze and optimize the two-level memory hierarchy system for motion estimation where the first level (L0 scratchpad) holds the search area of the estimator and the second level (L1 scratchpad) holds the region wherein the estimation is performed. In our system, the L1 scratchpad is reconfigurable and the aspect ratio of the region dynamically changes per video field. The aspect ratio is changed such that physically available region (L1) memory is maximally utilized. We extend this idea to the extreme case where the aspect ratio of the region changes from horizontal stripe to vertical column. This idea keeps the bandwidth requirements towards the off-chip image memory minimal, one access per pixel, regardless of the number of motion estimation scans. Further, switching the aspect ratio of the region to extreme values enables fast convergence of the motion estimator. To demonstrate our idea, experiments were performed on the test set of video sequences using the state-of-the-art de-interlacing as the application. The results are encouraging regarding both, objective quality metric as well as visual perception.","PeriodicalId":436123,"journal":{"name":"IEEE Workshop on Signal Processing Systems Design and Implementation, 2005.","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133734076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

An AS-DSP for forward error correction applications 用于前向纠错应用的AS-DSP

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-12-01 DOI: 10.1109/SIPS.2005.1579938

T. Hsiao, Chien-Ching Lin, Hsie-Chia Chang

引用次数: 0

A dynamic normalization technique for decoding LDPC codes LDPC码解码的动态归一化技术

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-12-01 DOI: 10.1109/SIPS.2005.1579968

Yen-Chin Liao, Chien-Ching Lin, Chih-Wei Liu, Hsie-Chia Chang

引用次数: 5

Scalable transcoding for video transmission over space-time OFDM systems 时空OFDM系统视频传输的可扩展转码

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-12-01 DOI: 10.1109/SIPS.2005.1579929

Tuanjie Qian, Jun Sun, Rong Xie, Pengcheng Su, Jia Wang, Xiaokang Yang

{"title":"Scalable transcoding for video transmission over space-time OFDM systems","authors":"Tuanjie Qian, Jun Sun, Rong Xie, Pengcheng Su, Jia Wang, Xiaokang Yang","doi":"10.1109/SIPS.2005.1579929","DOIUrl":"https://doi.org/10.1109/SIPS.2005.1579929","url":null,"abstract":"A new scheme combining a scalable transcoder with space time block codes (STBC) for an orthogonal frequency division multiplexing (OFDM) system is proposed for robust video transmission in dispersive fading channels. The target application for such a scalable transcoder is to provide successful access to the pre-encoded high quality video from mobile wireless terminals. In the scalable transcoder, besides outputting the fine granular scalability (FGS) bitstream, both size of video frames and the bit rate are reduced. And an array processing algorithm of layer interference suppression is used at the receiver which makes the system structure provide different levels of protection to different layers. Furthermore, by considering the important level of scalable bitstream, the different bitstreams can be given different level protection by the system structure and channel coding. With the proposed system, the concurrent large diversity gain characteristic of STBC and alleviating the frequency-selective fading effect of OFDM can be achieved. The simulation results suggest that the proposed schemes integrating scalable transcoding can provide a basic quality of video transmission and outperform the convention single layer transcoding transmitted under the random and bursty error channel conditions.","PeriodicalId":436123,"journal":{"name":"IEEE Workshop on Signal Processing Systems Design and Implementation, 2005.","volume":"430 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116002933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Data wordlength optimization for FPGA synthesis 用于FPGA合成的数据字长优化

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-11-02 DOI: 10.1109/SIPS.2005.1579941

N. Hervé, D. Ménard, O. Sentieys

引用次数: 36

Trellis state aggregation for soft decoding of variable length codes 可变长度码软译码的网格状态聚合

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-11-02 DOI: 10.1109/SIPS.2005.1579937

H. Jégou, S. Malinowski, C. Guillemot

引用次数: 12

A system-on-chip vector multiprocessor for transmission line modelling acceleration 用于传输线建模加速的片上系统矢量多处理器

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-11-02 DOI: 10.1109/SIPS.2005.1579931

V. Chouliaras, J. Flint, Yibin Li, J. Núñez-Yáñez

引用次数: 2

Robust digital image-in-video watermarking for the emerging H.264/AVC standard 新兴的H.264/AVC标准的鲁棒数字图像视频水印

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. Pub Date : 2005-11-02 DOI: 10.1109/SIPS.2005.1579947

Jing Zhang, A. Ho

引用次数: 16