2007 International Symposium on Communications and Information Technologies最新文献_第10页

Image enhancement for DNA microarray gridding using Conditional Convolution Sub-Block Histogram Equalization 基于条件卷积子块直方图均衡化的DNA微阵列网格图像增强

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392092

L. Pap, J. Zou

引用次数: 1

Using hyperbolic tangent sigmoid transfer function for companding transform in OFDM system 利用双曲正切s型传递函数进行OFDM系统的扩展变换

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4391990

Gang Yang, Yunfeng Zhou, Shixiang Qian

引用次数: 17

Fast FPGA prototyping of a multipath fading channel emulator via high-level design 通过高级设计的多径衰落信道仿真器的快速FPGA原型

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392006

Jeng-Kuang Hwang, Kuei-Horng Lin, Jeng-Da Li, Juinn-Horng Deng

引用次数: 12

Architecture of a low-complexity non-binary LDPC decoder for high order fields 高阶域的低复杂度非二进制LDPC解码器结构

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392200

A. Voicila, F. Verdier, D. Declercq, M. Fossorier, P. Urard

{"title":"Architecture of a low-complexity non-binary LDPC decoder for high order fields","authors":"A. Voicila, F. Verdier, D. Declercq, M. Fossorier, P. Urard","doi":"10.1109/ISCIT.2007.4392200","DOIUrl":"https://doi.org/10.1109/ISCIT.2007.4392200","url":null,"abstract":"In this paper, we propose a hardware implementation of the EMS decoding algorithm for non-binary LDPC codes, presented in [10]. To the knowledge of the authors this is the first implementation of a GF(q) LDPC decoder for high order fields (q ges 64). The originality of the proposed architecture is that it takes into account the memory problem of the non-binary LDPC decoders, together with a significant complexity reduction per decoding iteration which becomes independent from the field order. We present the estimation of the non-binary decoder implementation and key metrics including throughput and hardware complexity. The error decoding performance of the low complexity algorithm with proper compensation has been obtained through computer simulations. The frame error rate results are quite good with respect to the important complexity reduction. The results show also that an implementation of a non-binary LDPC decoder is now feasible and the extra complexity of the decoder is balanced by the superior performance of this class of codes. With their foreseen simple architectures and good-error correcting performances, non-binary LDPC codes provide a promising vehicle for real-life efficient coding system implementations.","PeriodicalId":331439,"journal":{"name":"2007 International Symposium on Communications and Information Technologies","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124095842","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: 71

Reconfigurable On-Chip Debugger with a real-time tracer 具有实时跟踪器的可重构片上调试器

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392004

Jun Pang, Lei Shi, Siliang Hua, Tiejun Zhang, C. Hou

引用次数: 6

Capacity analysis of simple and opportunistic feedback schemes in OFDMA Systems OFDMA系统中简单和机会反馈方案的容量分析

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392013

B. Jung, T. Ban, Wan Choi, D. Sung

{"title":"Capacity analysis of simple and opportunistic feedback schemes in OFDMA Systems","authors":"B. Jung, T. Ban, Wan Choi, D. Sung","doi":"10.1109/ISCIT.2007.4392013","DOIUrl":"https://doi.org/10.1109/ISCIT.2007.4392013","url":null,"abstract":"We mathematically analyze the system capacity of one simple feedback scheme and two opportunistic feedback schemes: simple-feedback, max-feedback, and max-n-feedback schemes, in orthogonal frequency division multiple access (OFDMA) systems. The maximum signal-to-noise ratio (SNR) scheduling strategy can be used as a scheduling criterion at base stations (BSs). In the simple-feedback scheme, each user sends the received SNRs of all sub-bands to the BS for frequency domain scheduling (FDS) at the BS. In two opportunistic feedback (OFB) schemes: max-feedback and max-n-feedback schemes, each user sends the reduced number of SNR values among the SNR values of all sub-bands in order to reduce the feedback overhead. In this paper, we derive the system capacity of the simple-feedback and max-feedback schemes in a closed-form. In addition, we derive the upper-bound of the system capacity of the max-n-feedback scheme. The analytical results agree with computer simulation results. Furthermore, the results show that the OFB schemes can reduce the feedback overhead, while the multiuser diversity can be maintained as the number of user increases.","PeriodicalId":331439,"journal":{"name":"2007 International Symposium on Communications and Information Technologies","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125275629","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: 17

High-performance BiCMOS current Controlled CDBA and application 高性能BiCMOS电流控制CDBA及其应用

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4391981

P. Silapan, W. Jaikla, M. Siripruchyanun

引用次数: 7

Statistical study of unusual DNS query traffic 异常DNS查询流量的统计研究

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392087

D. Romaņa, Y. Musashi, H. Nagatomi, K. Sugitani

引用次数: 3

Joint active users’ identification and multiuser detection in cell DS-CDMA system 小区DS-CDMA系统中联合活跃用户识别与多用户检测

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392198

Chen Lianghui, Huang Hanying

引用次数: 1

Viability of concurrent transmission and reception for UWB radios over multipath channels 多径信道上UWB无线电并发发送和接收的可行性

2007 International Symposium on Communications and Information Technologies Pub Date : 2007-12-04 DOI: 10.1109/ISCIT.2007.4392207

Ricardo Gandia Sanchez, Xiaojing Huang, Kwan-Wu Chin

引用次数: 2