12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598)最新文献_第6页

Pre-equalization for the up-link of TDD OFDM systems TDD OFDM系统上行链路的预均衡

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965269

K. Witrisal, Yong-Ho Kim, R. Prasad, L. Ligthart

引用次数: 13

Intersymbol interference cancellation for layered demodulation with bit separated coding 位分离编码分层解调中的码间干扰消除

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965401

M. Uesugi, O. Kato, K. Homma

{"title":"Intersymbol interference cancellation for layered demodulation with bit separated coding","authors":"M. Uesugi, O. Kato, K. Homma","doi":"10.1109/PIMRC.2001.965401","DOIUrl":"https://doi.org/10.1109/PIMRC.2001.965401","url":null,"abstract":"Very high transmission rates are required for current mobile communication systems, and it is anticipated that even higher transmission rates will be required in the near future. In order to satisfy these requirements, efficiency in the use of scarce frequency resources is essential. To this end, we further examine adaptive modulation which is a very good method to improve transmission efficacy over fluctuating channel conditions. Thus far, proposals that either incorporate or introduce the use of adaptive modulation require the negotiation of the modulation or coding scheme for use between the transmitter and the receiver. This negotiation results in a large overhead and requires very high transmission channel quality. In order to eliminate the need for this negotiation, we proposed a layered demodulation scheme with bit separated coding (see Uesugi, M. et al., WPMC'00-1165, 2000) that we believe provides a very effective solution to this end. This paper shows an intersymbol interference rejecting scheme which uses bit separated coding. The effect of the coding is that the performance of interference cancellation has been tremendously improved.","PeriodicalId":318292,"journal":{"name":"12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133244584","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

An efficient software radio implementation of the UMTS turbo codec 一个有效的软件无线电实现的UMTS turbo编解码器

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965330

M. Valenti

引用次数: 18

A new explicit loss notification with acknowledgment for wireless TCP 一种新的带确认的无线TCP显式丢失通知

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965432

Wenqing Ding, A. Jamalipour

引用次数: 44

Reconfigurable Radio: the evolving perspectives of different players 可重构无线电:不同玩家不断发展的视角

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965466

J. Pereira

{"title":"Reconfigurable Radio: the evolving perspectives of different players","authors":"J. Pereira","doi":"10.1109/PIMRC.2001.965466","DOIUrl":"https://doi.org/10.1109/PIMRC.2001.965466","url":null,"abstract":"From its initial concept software radio (SR), which has remained, especially in the US, mainly focused on the terminal, and still under considerable military influence, has evolved slowly, starting only recently to take into account commercial considerations, in spite of some initial insight in that direction. While some saw it as \"simply\" freeing us from standards, by allowing the definition of the radio terminal in software (hence software defined radio, SDR), we see it as changing not only the way we think radio systems and networks, but also the way we define and provide the services and adapt the applications that ran on top of them. We discuss this much broader, all encompassing approach. While the \"canonical\" SDR approach concentrates on the terminal side, ours covers the whole system, extending through the network into service creation and application development, and delving into the impact on spectrum usage, regulation and standardisation. Instead of settling for defining the terminal in software, we envision reconfiguring on demand not only the terminal but also the serving network(s) and the services they provide (hence reconfigurable radio systems and networks). As this approach is put to work in Europe, our vision of reconfigurability continues to evolve. We focus on the different perception manufacturers, operators and application developers have of reconfigurability, of its role, and how these viewpoints are expected to evolve with their evolving business models.","PeriodicalId":318292,"journal":{"name":"12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121276907","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: 10

Iterative channel estimation and coded symbol detection for dispersive channels 色散信道的迭代信道估计与编码符号检测

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965470

B. Unal, A. Berthet, R. Visoz

{"title":"Iterative channel estimation and coded symbol detection for dispersive channels","authors":"B. Unal, A. Berthet, R. Visoz","doi":"10.1109/PIMRC.2001.965470","DOIUrl":"https://doi.org/10.1109/PIMRC.2001.965470","url":null,"abstract":"We propose two pilot symbol aided iterative algorithms for channel re-estimation to be used in iterative detection and decoding (turbo-detection) of signals transmitted over frequency selective channels. The first algorithm is based on the expectation-maximization (EM) algorithm that makes use of a signal decomposition to compute separate dosed form recursion expressions for the channel coefficient re-estimates. The a posterior conditional channel state probabilities required by the EM-based turbo-estimation can be easily provided by the forward-backward trellis search performed by the soft-in soft-out (SISO) ISI decoding task. The second algorithm is based on the well-known bootstrap algorithm where soft information from the outer decoder is used to make hard decisions on transmitted coded data, and the detected coded data are used in the channel turbo-estimation process via the conventional linear pseudo-inverse method. Both of the proposed channel turbo-estimation algorithms are naturally embedded in the framework of the turbo-detector, bringing almost no overhead to the receiver complexity.","PeriodicalId":318292,"journal":{"name":"12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116996687","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: 4

Highly accurate PHS location service system 高精度的小灵通定位服务系统

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965261

T. Oono, R. Yamamoto, H. Matsuki, H. Matsutani, H. Ohtsuka, S. Onoe

引用次数: 1

M-ary infrared CDMA for indoors wireless communications 用于室内无线通信的红外CDMA

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965253

S. Zahedi, J. Salehi, M. Nasiri-Kenari

引用次数: 19

An adaptive receiver based on software defined radio techniques 一种基于软件无线电技术的自适应接收机

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965332

H. Ishii, S. Kawamura, Takanao Suzuki, M. Kuroda, H. Hosoya, H. Fujishima

引用次数: 13

A tagging-based medium access scheme for wireless data applications in CDMA/TDM networks 在CDMA/TDM网络中无线数据应用的一种基于标记的介质访问方案

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598) Pub Date : 2001-09-30 DOI: 10.1109/PIMRC.2001.965280

A. Anpalagan, E. Sousa

{"title":"A tagging-based medium access scheme for wireless data applications in CDMA/TDM networks","authors":"A. Anpalagan, E. Sousa","doi":"10.1109/PIMRC.2001.965280","DOIUrl":"https://doi.org/10.1109/PIMRC.2001.965280","url":null,"abstract":"In this paper, a packet scheduling scheme based on real-time channel conditions and avoidance of dominant inter-cell interferers is proposed and studied. This scheme is implemented by the distribution of tags by receivers among transmitters. We focus on reverse links of a CDMA/TDM system where for every slot, each base station issues M(/spl ges/1) tags to M mobile users (MU) based on the ranked reverse link gains. The number of tags thus issued depends on the expected traffic, the number of cells and the propagation conditions in the network. Two types of tags can be issued: eg, hard and soft tags. A MU will transmit only if it receives a tag from its home base station (BS) and no hard tag from any other BS. Hence, in our scheme, MU that not only have stronger channel pins to their respective home BS but also cause relatively lower inter-cell interference are scheduled for transmissions. This scheme is hence a cooperative approach whereby good-neighbor behaviour is exhibited. Soft-tagging offers flexibility in allowing MU that cause moderate inter-cell interference to transmit under certain conditions such as longer starved time. Simulation results in shadow and a Rayleigh failing environment are presented to show that our scheme outperforms the conventional scheme by 30% in transmit bit energy when M = 10 in a 9-cell network with 100 MU uniformly distributed.","PeriodicalId":318292,"journal":{"name":"12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127249093","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: 4