57 Hits in 5.6 sec

The complete solution for third-generation wireless communications: two modes on air, one winning strategy

N. Haardt, W. Mohr
2000 IEEE personal communications  
Acknowledgments The authors would like to acknowledge the constructive contributions of their colleagues at Siemens.  ...  This low chip rate option will be elaborated on by 3GPP as part of release 2000.  ...  The chip rates are 3.84 Mchips/s for UTRA TDD and 1.28 Mchips/s for TD-SCDMA.  ... 
doi:10.1109/98.892254 fatcat:7hgtpkl6orfspfrlwimqigxw5q

The TD-CDMA based UTRA TDD mode

M. Haardt, A. Klein, R. Koehn, S. Oestreich, M. Purat, V. Sommer, T. Ulrich
2000 IEEE Journal on Selected Areas in Communications  
The third-generation mobile radio system UTRA that has been specified in the Third Generation Partnership Project (3GPP) consists of an FDD and a TDD mode.  ...  Moreover, an overview of the system architecture and the radio interface protocols is given. Furthermore, the physical layer of UTRA TDD is explained, and the protocol operation is described.  ...  ACKNOWLEDGMENT The authors would like to acknowledge the contributions of their colleagues at Siemens, as well as the constructive cooperation with their colleagues within 3GPP.  ... 
doi:10.1109/49.864003 fatcat:bqjezgizjrhtfendx7lxa4ji2e

Inter-vehicles Communication: A New Frontier of Ad Hoc Networking

Luigi Fratta
2008 2008 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications  
UTRA-TDD communication system architecture) to a totally decentralised Ad Hoc mode [2] .  ...  In order to satisfy the basic requirements of such a radio interface, the framework of the UMTS Terrestrial Radio Access Time Division Duplex (UTRA-TDD) with modifications has been adopted as target system  ...  (FDD), also referred to as UMTS Terrestrial Radio Access (UTRA)-FDD, and Time Division Duplex (TDD), referred to as UTRA TDD, which has two options: high chip rate (3.84 Mchip/s) and low chip rates (1.28  ... 
doi:10.1109/wimob.2008.132 dblp:conf/wimob/Fratta08 fatcat:xkvfcpfjsvgyhkjh2h7iuamicy

Recent advances in cellular wireless communications

M. Zeng, A. Annamalai, V.K. Bhargava
1999 IEEE Communications Magazine  
ACKNOWLEDGMENTS The authors would like to acknowledge TELUS Mobility for support of this work.  ...  from the IS-95 chip rate.  ...  The enhancement features in comparison to the current IS-136 Revision A include the use of higher-level modulation(8-PSK) for higher payload capacity to the existing 30 kHz carrier, support of GPRS-based  ... 
doi:10.1109/35.790971 fatcat:lvcfgkb33bbbzkeuz3oh2ubqc4

Evolution from TD-SCDMA to FuTURE [chapter]

Xiaodong Xu, Lihua Li, Ping Zhang
2009 Internet and Communications  
as the low chip rate (LCR) TDD mode of universal terrestrial radio access (UTRA) in March 2001.  ...  Higher Spreading Factor and Chip Rate The potential benefits of higher chip rate include system-level gains from trunking efficiency, link-level gains from the ability to better resolve channel paths,  ... 
doi:10.1201/9781420072112.ch2 fatcat:xnhslgf2qfhe5gadpbmzzyc45u

On the Coexistence among WiMAX-TDD, TD-LTE, and TD-SCDMA

Bong-Youl Cho, Jin-Young Kim
2010 Journal of the Korean Institute of Electromagnetic Engineering and Science  
A disadvantage of TDD is that tight coordination such as time synchronization between adjacent operators is required to prevent interference between the adjacent TDD systems.  ...  We already have at least four different TDD systems in the industry: Time Division-Synchronous Code Division Multiple Access(TD-SCDMA), IEEE 802.16e-TDD, IEEE 802.16m-TDD, and Time Division-Long Term Evolution  ...  TD-SCDMA 3GPP UTRA TDD low chip rate(LCR), which is operated with 1.28 Mcps in 1.6 MHz BW, is known as TD-SCDMA in the industry.  ... 
doi:10.5515/jkiees.2010.10.3.104 fatcat:y2i5fokea5hodj7zewlux73fia

China's perspectives on 3G mobile commuunications and beyond: TD-SCDMA technology

Hsiao-Hwa Chen, Chang-Xin Fan, W.W. Lu
2002 IEEE wireless communications  
Nevertheless, TD-SCDMA's PTAP ratio is 10 dB less than that of UTRA TDD CDMA [2] .  ...  A comparison of major physical layer operational parameters between TD-SCDMA and UTRA TDD.  ...  To cope with emerging ever more severe competition, China wants to promote its own mobile standard to save the cost of purchasing foreign IPs and technologies, and eventually to gain a world market share  ... 
doi:10.1109/mwc.2002.998525 fatcat:ijowlnfqfnhcxfz46xrx3d464e

3GPP LTE/SAE: An Overview

S. M. Chadchan, C. B. Akki
2010 International Journal of Computer and Electrical Engineering  
The fundamental aim of long-term evolution (LTE) is to improve the service provisioning and reduce user and operators cost, which will be fulfilled by improving data rates, coverage, system capacity and  ...  The paper provides the valuable and concise information to the researchers in the area of 3GPP LTE and 4G.  ...  EDGE Rel-4 Low chip rate TDD (1.28 Mcps), Multimedia messaging support, Initial step towards IP Core Network. Rel-5 HSDPA, IMS Phase-1, Full ability to use IP-based transport instead of ATM.  ... 
doi:10.7763/ijcee.2010.v2.232 fatcat:wjg7sdydcnch7ftpycyw6euzvq

A universal MIMO approach for 3GPP wireless standards

Vasileios M. Kapinas, George K. Karagiannidis
2012 2012 IEEE Wireless Communications and Networking Conference (WCNC)  
High-Speed Packet Access (HSPA) releases to the very recent Long Term Evolution (LTE)-Advanced standard.  ...  Our approach is based on the adoption of a novel measure called Necessary Transmit Information (NTI) and on its one-to-one correspondence with the TRAM.  ...  ACKNOWLEDGMENT The authors would like to acknowledge the support provided by the Scientific Computing Center at A.U.Th. throughout the progress of this research work. They are also thankful to Mr.  ... 
doi:10.1109/wcnc.2012.6214104 dblp:conf/wcnc/KapinasK12 fatcat:cfj4edxd75hylmbkibjlmxw34m

A Survey on Progress and Standardization Trends in Wireless Communications (Invited Paper)

Makoto Miyake
2009 Journal of Communications  
Progress of digital wireless communications and recent trends in standardizations are reviewed, addressing the main features and driving factors of innovations.  ...  Trends of technology integration and system integration are observed.  ...  III 3GPP STANDARDS AND MAIN FEATURES Version Date of Issue Main Features Release 99 Dec. 1999 Basic specifications of UTRA and UTRAN (W-CDMA FDD) Release 4 March 2001 TDD mode introduced Release  ... 
doi:10.4304/jcm.4.7.509-520 fatcat:hjna7t3aibabdaaqqxkswyza7e

Analysis and Planning of UMTS Systems

Adriana Mariano, Julio Cesar R. Dal Bello, Eduardo Rodrigues Vale
2014 IOSR Journal of Electronics and Communication Engineering  
The UMTS marked the beginning of a new Era that demanded, by mobile phone users, the provision of data services at high rates of transmission, that are almost always associated with the mobility of the  ...  This paper aims to present the main results obtained by the authors of the Analysis and Planning of an UMTS systems.  ...  Duplex (UTRA TDD).  ... 
doi:10.9790/2834-09164449 fatcat:m2hscv5gqnhwvc4ujijw33c6r4

Optimizing power consumption in smartphones - a comprehensive survey

2016 International Journal of Latest Trends in Engineering and Technology  
Smartphones are being used extensively these days and they are capable of replacing conventional computers and laptops to some extent.  ...  This limits the battery backup of smartphones and hence the battery life.  ...  The chip rate of 3.84 Mcps (Million chips per second) leads to a carrier bandwidth of approximately 5 MHz.  ... 
doi:10.21172/1.72.529 fatcat:ea7pgfh2kzew3k56st42bnb75e

Enabling Multi-Functional 5G and Beyond User Equipment: A Survey and Tutorial

Yiming Huo, Xiaodai Dong, Wei Xu, Marvin Yuen
2019 IEEE Access  
., has provided inspiring and promising approaches to address 5G and beyond challenges.  ...  After the classification of typical 5G application and deployment scenarios, we propose and analyze a novel hardware reuse and multiplexing solution to facilitate cost-effective and energy-efficient UE  ...  ACKNOWLEDGEMENT The authors would like to acknowledge Natural Sciences and Engineering Research Council of Canada, National Natural Science Foundation of China for the support of this project, and valuable  ... 
doi:10.1109/access.2019.2936291 fatcat:wxssot7455etxmxnokgsdkobbu

Software-Defined Radio—Basics and Evolution to Cognitive Radio

Friedrich K Jondral
2005 EURASIP Journal on Wireless Communications and Networking  
Cognitive radios are introduced as the next step in radio systems' evolution. The need for cognitive radios is exemplified by a comparison of present and advanced spectrum management strategies.  ...  The role of standards in radio development is emphasized and the usage of transmission mode parameters in the construction of software-defined radios is described.  ...  Prospective authors should submit an electronic copy of their complete manuscript through the EURASIP JWCN manuscript tracking system at, according to the following timetable  ... 
doi:10.1155/wcn.2005.275 fatcat:bqgwcricabekpbft22szoustum

MBMS—IP Multicast/Broadcast in 3G Networks

Frank Hartung, Uwe Horn, Jörg Huschke, Markus Kampmann, Thorsten Lohmar
2009 International Journal of Digital Multimedia Broadcasting  
Finally, evolution of MBMS as part of 3GPP standardization is presented.  ...  In this article, the Multimedia Broadcast and Multicast Service (MBMS) as standardized in 3GPP is presented. With MBMS, multicast and broadcast capabilities are introduced into cellular networks.  ...  In a parallel track 3GPP has standardised the long term evolution of UTRA, called 3G LTE (denoted by E-UTRA in the 3GPP specifications).  ... 
doi:10.1155/2009/597848 fatcat:l42qdvsnljf7xkhgrz3uwwrl5u
« Previous Showing results 1 — 15 out of 57 results