发布求助
文献互助 智能选刊 最新文献

Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing最新文献

筛选
英文 中文
Towards a graphics/procedural environment for constructing VLSI module generators 构建VLSI模块生成器的图形/程序环境
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48437
D. Gamble, R. Hobson
{"title":"Towards a graphics/procedural environment for constructing VLSI module generators","authors":"D. Gamble, R. Hobson","doi":"10.1109/PACRIM.1989.48437","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48437","url":null,"abstract":"New techniques for improving the productivity and working environment of designers who use procedural layout techniques for implementing VLSI module generators are described. APL and C, as examples of interpreted and compiled languages, can be interfaced to an advanced graphics display system in such a way that the tediousness associated with coordinate entry and referencing is removed. Designers can procedurally define arbitrarily complex objects, such as decoders, memory arrays, barrel shifters, etc., by interactively stitching primitive objects and cells together using a new path-forming primitive called a trail.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"449 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123018468","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: 1
Adaptive vector quantization with a structural level adaptable neural network 基于结构级自适应神经网络的自适应矢量量化
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48415
T. Lee, A. Peterson
{"title":"Adaptive vector quantization with a structural level adaptable neural network","authors":"T. Lee, A. Peterson","doi":"10.1109/PACRIM.1989.48415","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48415","url":null,"abstract":"A new type of adaptive vector quantizer is proposed. The core of this system is a self-development neural network constituting the codebook of the vector quantizer. Each neuron in the network memorizes a codeword of the active codebook in its input interconnection weight vector. The codebook is constantly evolving with time to reflect the statistical fluctuation of the source signals. The dynamics of the codebook is characterized by neuron generation, neuron weight vector adjustment, and neuron annihilation processes of the network. The quantization residue of the neural network quantizer is fed to a fixed structure lattice vector quantizer, and the quantized residue is used to stimulate the evolution process of the neural network codebooks inside both the transmitter and the receiver.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115322824","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: 0
MACHAM: a best match content addressable memory MACHAM:最佳匹配内容可寻址存储器
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48438
Michiel van de'Panne, Marcel, LeBlanc, Z. Vranesic
{"title":"MACHAM: a best match content addressable memory","authors":"Michiel van de'Panne, Marcel, LeBlanc, Z. Vranesic","doi":"10.1109/PACRIM.1989.48438","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48438","url":null,"abstract":"MACHAM is an acronym for memory addressable by content using Hamming distance. MACHAM is a VLSI chip capable of providing a list of matches sorted by the Hamming distance between the test pattern and stored patterns. This type of content addressable memory is expected to be useful for pattern recognition problems solvable with template matching. The usefulness of the MACHAM chip in a bit-coded character recognizer is discussed. A prototype capable of holding 16 templates of 16 bit has been implemented.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129627080","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
Distributed network intelligence and its implication to the broadband ISDN 分布式网络智能及其对宽带ISDN的意义
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48410
S. Sistla, J. Gort
{"title":"Distributed network intelligence and its implication to the broadband ISDN","authors":"S. Sistla, J. Gort","doi":"10.1109/PACRIM.1989.48410","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48410","url":null,"abstract":"Interprocessor communication delays, module precedence relationships, module scheduling, interconnection network delays, and the associated response times are among the factors addressed in evaluating the impact of the emerging intelligent network architecture on broadband ISDN services. The evolution of the network is examined in the context of these potential constraints by considering connection setup tasks, service-related tasks, and the associated task response times against the background of a Signaling System Number 7 overlay network.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129711292","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: 1
Implementation of the pulse interval modulation code 3B17P for a 90 Mbit/s LED single mode fibre system 90 Mbit/s LED单模光纤系统脉冲间隔调制代码3B17P的实现
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48392
S. Vandenbrink, P. Goud, C. G. Englefield
{"title":"Implementation of the pulse interval modulation code 3B17P for a 90 Mbit/s LED single mode fibre system","authors":"S. Vandenbrink, P. Goud, C. G. Englefield","doi":"10.1109/PACRIM.1989.48392","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48392","url":null,"abstract":"A modified version of pulse position modulation (PPM), asynchronous digital pulse interval modulation (PIM), is examined. The modulation scheme strengthens the viability of using LEDs as sources on a single mode fiber system, by allowing an increase in the peak power coupled into the fiber. First, an overview of the PIM code is provided. This is then followed by a detailed description of the 3B17P PIM code, which was implemented in an experimental 90-Mb/s communication system. Experimental results of the system's bit error rate (BER) versus the average received power were obtained for both the PIM and NRZ code over a coaxial cable link. The results are compared and discussed. The PIM code has a power advantage of up to 3.5 dB over the NRZ binary code. At a constant peak received power, the effect of the threshold level on the BER is similar for both codes at a high SNR. At a low SNR, there appears to be an optimal threshold level that depends on the duty cycle of the received code.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129967143","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: 5
A multi-DSP board for a parallel computer using a packet switched, pipelined bus 一种用于并行计算机的多dsp板，采用分组交换、流水线总线
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48328
E. Distefano, W. Snelgrove
{"title":"A multi-DSP board for a parallel computer using a packet switched, pipelined bus","authors":"E. Distefano, W. Snelgrove","doi":"10.1109/PACRIM.1989.48328","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48328","url":null,"abstract":"The design of a multi-DSP board with real-time digital signal processing capabilities, to be used in HECTOR (a multiple-instruction multiple-data parallel computer under development at the University of Toronto), is proposed. Every DSP has access to both local and global onboard memory. Offboard, HECTOR global memory is also accessible. The DSPs share global onboard memory through a single bus with arbitration based on rotating priority. Offboard memory is accessed through the p-bus, a parallel, pipelined, packet-switched, ring-based interconnection network. A/D and D/A converters provide an interface to possible analog inputs. Critical parts of the board have been simulated using THOR, a functional simulator running under the UNIX operating system. Results of the simulation are presented.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115798976","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: 0
Enhancing the dynamic range of analog-to-digital converters by reducing excess noise 通过减少过量噪声来提高模数转换器的动态范围
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48429
E. Seifert, A. Nauda
{"title":"Enhancing the dynamic range of analog-to-digital converters by reducing excess noise","authors":"E. Seifert, A. Nauda","doi":"10.1109/PACRIM.1989.48429","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48429","url":null,"abstract":"A technique for improving the dynamic range of analog-to-digital converters (ADCs) is presented. The technique consists of summing outputs of several parallel N-bit ADCs to reduce the uncorrelated excess noise introduced by each ADC. This increases the number of effective bits of resolution and is most useful to regain bits lost after dithering to reduce spurious harmonics for spectral analysis applications. The sensitivity of this approach to uncertainties in component gain and delay is discussed.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126288900","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: 19
Simultaneous ranging and telecommand in ESA deep-space tracking system: minimization of intermodulation interference 欧空局深空跟踪系统中的同步测距和远程指挥:互调干扰最小化
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48406
M. Nahvi, R. De Gaudenzi
{"title":"Simultaneous ranging and telecommand in ESA deep-space tracking system: minimization of intermodulation interference","authors":"M. Nahvi, R. De Gaudenzi","doi":"10.1109/PACRIM.1989.48406","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48406","url":null,"abstract":"To investigate potentials for bit error rate degradation in the telecommand, a mathematical model of the ranging signal is developed, and its frequency spectrum is derived in an explicit analytical closed form. The formulation is then used to compute the interference. The probability of error is determined and illustrated by numerical results. The analysis and results can be applied for optimal choice of frequencies and design. It is shown that the telecommand bit error rate degradation due to simultaneous ranging is negligible for all practical cases.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126473670","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: 0
A floating-point systolic cell for fit-error computations in vision processing 一种用于视觉处理中拟合误差计算的浮点收缩单元
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48444
M. E. Malowany, A. Malowany
{"title":"A floating-point systolic cell for fit-error computations in vision processing","authors":"M. E. Malowany, A. Malowany","doi":"10.1109/PACRIM.1989.48444","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48444","url":null,"abstract":"A floating-point systolic cell architecture for a VLSI circuit to perform fit-error computations is proposed. The cell is intended for participation in a dedicated hardware system which extracts mean and Gaussian curvature maps from range images. The principles of the cell architecture are given as well as an outline of the curvature extraction procedure and the larger hardware environment for curvature extraction of which the array of new cells forms a part. Results are presented from applying a software version of the curvature extraction algorithm with this fit-error computation to a real range image in a general-purpose Sun computing environment. Performance estimates for the curvature extraction using the new dedicated hardware are compared to measured execution times in the general-purpose computing environment.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127419531","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
Performance of M-ary QAM schemes in a a中多个QAM方案的性能
Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing Pub Date : 1989-06-01 DOI: 10.1109/PACRIM.1989.48385
T. Le-Ngoc, G. M. Lieu, V. Bhargava
{"title":"Performance of M-ary QAM schemes in a","authors":"T. Le-Ngoc, G. M. Lieu, V. Bhargava","doi":"10.1109/PACRIM.1989.48385","DOIUrl":"https://doi.org/10.1109/PACRIM.1989.48385","url":null,"abstract":"A simple, statistical model to evaluate the performance of M-ary QAM schemes in a line-of-sight multipath fading channel is proposed. The model is based on assumptions about the channel which are often encountered in practice. It leads to the postulation of an exponential-type probability density describing the effects of multipath fading on M-ary QAM schemes, whereby closed-form expressions for the average error probability can be derived. Illustrative results for 16-, 64-, and 256-QAM signals are presented.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"24 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132090937","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信