Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94)最新文献

Packet combining error control for CDMA systems 码分多址系统的分组合并误差控制

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379585

S. Souissi, S. Wicker

引用次数: 0

Additional interference in a RAKE receiver implementation of a CDMA power control mechanism CDMA功率控制机制的RAKE接收机实现中的附加干扰

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379550

T. Chebaro, P. Godlewski

引用次数: 2

The feasibility of combating multipath interference by chirp spread spectrum techniques over Rayleigh and Rician fading channels 研究了在瑞利和瑞利衰落信道上利用啁啾扩频技术对抗多径干扰的可行性

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379577

Ywh-Ren Tsai, Jin-Fu Chang

引用次数: 37

Complex valued spreading sequences with good crosscorrelation properties 具有良好互相关性质的复值扩展序列

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379535

L. Oppermann, B. Vucetic

{"title":"Complex valued spreading sequences with good crosscorrelation properties","authors":"L. Oppermann, B. Vucetic","doi":"10.1109/ISSSTA.1994.379535","DOIUrl":"https://doi.org/10.1109/ISSSTA.1994.379535","url":null,"abstract":"This paper examines the performance of sets of pseudorandom (PR) sequences using the criterion of least mean-square (MS) values of the aperiodic cross-correlation (CC). The MS correlation values are averaged over all elements in the set rather than the more traditional approach of taking the MS correlation values of randomly selected elements as representative. This is intended to give an indication of the performance of the set as a whole. This paper introduces a new family of constant amplitude, complex valued sequences designed using the criterion of least MS value of the CC values of all sequences in the set. This family of sequences is compared with well known sequences on the basis of correlation values and frequency characteristics and is shown to offer a wider range and better combination of correlation values. The paper also provides a limit on the lower bound of the value of the MS CC for the new family of complex sequences and members of the family are given for which the average MS value of the CC asymptotically approaches this bound. The potential trade off of CC values for auto-correlation (AC) is also illustrated.<<ETX>>","PeriodicalId":158358,"journal":{"name":"Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122897181","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: 6

Bayesian erasure techniques for frequency-hop spread-spectrum communications with fading and partial-band interference 具有衰落和部分频带干扰的频跳扩频通信的贝叶斯擦除技术

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379587

C. Baum, M. Pursley

引用次数: 1

An integrated all digital diversity receiver for spread spectrum communications over multipath fading channels 用于多径衰落信道扩频通信的集成全数字分集接收机

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379562

C. Moullec, G. El Zein, J. Citerne

引用次数: 2

Acquisition-based capacity estimates for CDMA with imperfect power control 不完全功率控制下基于获取的CDMA容量估计

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379569

G. Corazza, Vittorio Degli-Esposti

{"title":"Acquisition-based capacity estimates for CDMA with imperfect power control","authors":"G. Corazza, Vittorio Degli-Esposti","doi":"10.1109/ISSSTA.1994.379569","DOIUrl":"https://doi.org/10.1109/ISSSTA.1994.379569","url":null,"abstract":"One of the major advantages of a code division multiple access (CDMA) system is the flexibility in frequency assignment, which allows all the users to share the same frequency band and, possibly, to partially overlay the spectrum allocation of different services. However, before synchronism to the desired sequence is achieved, the presence of multiple access interference (MAI) is a major impairment which determines the performance of the code acquisition sub-system. It has been argued that the acquisition performance in the presence of MAI may pose limits to the capacity of a CDMA system which are more stringent than those coming from bit error probability specifications. We introduce a general definition for acquisition-based capacity of a CDMA system. This quantity is evaluated for an acquisition sub-system with non-coherent correlator/detector and straight serial search in the time uncertainty region. The effect of imperfect power control is also analysed, showing that the capacity may be substantially decreased when the residual standard deviation of the received power level is above 1 dB.<<ETX>>","PeriodicalId":158358,"journal":{"name":"Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132049136","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: 16

CDMA cellular radio network 码分多址蜂窝无线网络

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379613

W.C.-Y. Lee

引用次数: 2

Performance evaluation of parallel combinatory SSMA systems in Rayleigh fading channel 瑞利衰落信道下并行组合SSMA系统性能评价

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379595

S. Sasaki, H. Kikuchi, H. Watanabe, J. Zhu, G. Marubayashi

引用次数: 13

Approximation of the odd-correlation distribution of p-ary sequences p元序列奇相关分布的近似

Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) Pub Date : 1994-07-04 DOI: 10.1109/ISSSTA.1994.379553

H. Tanaka, S. Matsufuji, Y. Watanabe

引用次数: 0