digital mobile radio towards future generation systems

... channel estimation performance of the future generation OFDM-based packet communication systems At first, the performance of OFDMbased packet communication systems according to frame structure ... intelligent estimation techniques in OFDM-based communication system, which is suitable for future generation wireless mobile communication network service, is proposed Also we have evaluated the estimation ... estimation schemes can be applied to the design and analysis for OFDM-based future generation intelligent communication network systems ACKNOWLEDGMENT This research is supported by the ubiquitous Computing...

Ngày tải lên: 21/06/2014, 23:20

... ck,0 , , ck,L−1 dk,0 L−1 ˆ dg + cg,0 , , cg,L−1 Mobile terminal (a) CSI − Hg,1 M × ˆ dg + × × wr,L−1 cg,L−1 + ck,0 , , ck,L−1 Mobile terminal (b) Base station Figure 1: Transmitters ... VSF-OFCDM and MC/DS-CDMA,” in Proc The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC ’02), vol 3, pp 992–997, Lisboa, Portugal, September 2002 [5] B ... lie in signal processing techniques for digital communications and communication protocols Within this research line, he has done work for optical and mobile communications, at either the theoretical...

Ngày tải lên: 23/06/2014, 00:20

... Czylwik, “Downlink beamforming for mobile radio systems with frequency division duplex,” in Proc IEEE 11th International Symposium on Personal, Indoor and Mobile Radio Communications, vol 1, pp ... Utschick and J A Nossek, “Downlink beamforming for FDD mobile radio systems based on spatial covariances,” in Proc European Wireless 99 & ITG Mobile Communications, pp 65–67, Munich, Germany, October ... cellular mobile radio systems In 2000, he EURASIP Journal on Applied Signal Processing became a full professor at the Technical University of Braunschweig, heading the Department of Microcellular Radio...

Ngày tải lên: 23/06/2014, 01:20

... in cellular land mobile radio systems and the ease of a practical applicability to all existing and proposed, digital and analogue, cellular land mobile radio systems Hence such systems can be ... Land Mobile Radio Systems 2.1 INTRODUCTION Spectral efficiency in Cellular Land Mobile Radio Systems Introduction In order to assess the efficiency of spectral usage in cellular land mobile radio ... SPECTRAL EFFICIENCY MEASURE FOR DIGITAL SYSTEMS Digital cellular land mobile radio systems are becoming increasingly popular In fact, various digital cellular systems are being proposed and some...

Ngày tải lên: 03/07/2014, 21:45

Ngày tải lên: 04/07/2014, 03:55

... therefore encompasses satellite mobile, aeromobile and maritime mobile, as well as cordless telephones, radio paging, traditional private mobile radio (PMR) and cellular systems Any book which attempted ... bands, for example, television, domestic radio, Citizens' Band radio, marine radio, aeromobile radio (including instrument landing systems) and military radio Several of these services have a `safety ... and second -generation analogue and Introduction digital cellular radio telephone systems, e.g AMPS, TACS, GSM and DCS1800, use frequencies up to 1900 MHz, and third -generation wideband systems will...

Ngày tải lên: 28/10/2013, 11:15

... not a major source of problems to mobile radio systems in temperate climates REFERENCES Jordan E.C and Balmain K.G (1968) Electromagnetic Waves and Radiating Systems Prentice Hall, New York Friis ... Griths J (1987) Radio Wave Propagation and Antennas: An Introduction Prentice Hall, London Collin R.E (1985) Antennas and Radiowave Propagation McGraw-Hill, New York The Mobile Radio Propagation ... and therefore have the potential to cause interference between di€erent radio communication systems Forward scattering of radio energy is suciently dependable that it may be used as a mechanism...

Ngày tải lên: 07/11/2013, 03:15

... Linkšping 980901 Appendix A: Project proposal within Future Manufacturing Systems Strategies for future production systems - An analytical approach towards Agility Researcher: Mats Jackson, ABB and ... productivity, of manual assembly systems - 17 - Linkšping 980901 Appendix C: Project proposal within Future Manufacturing Systems Runtime development of manufacturing subsystems - How to cope with ... of future manufacturing systems, ensures the educational co-operation and research co-operation 3.5 Connection to other Projects The overall purpose of this project is to link present and future...

Ngày tải lên: 23/11/2013, 14:09

... had to be moved significantly into the future for the program to continue xx Lessons from the Army Future Combat Systems Program Lessons from Requirements Generation An organization and operation ... an opportunity to so in the future, pulling from the work accomplished in FCS, and xxiv Lessons from the Army Future Combat Systems Program building toward a coherent future Current Army management ... Federal Acquisition Regulation FCS Brigade Combat Team Full-Combat Capability Future Combat Systems Future Combat Vehicle Future Force Integration Directorate FCS Maintenance and Recovery Vehicle...

Ngày tải lên: 23/03/2014, 02:20

... semantics Time series can be manipulated in object-relational systems such as Oracle [16] or in array database systems such as KDB [13] These systems not support the execution of long-running queries ... environment of a sensor network with computing power at each node resembles a mobile computing environment [8] Sensors differ from mobile hosts in that sensors only serve external requests but not initiate ... believe that sensor database systems are a promising new field for database research We described a data model and long-running query semantics for sensor database systems where stored data are...

Ngày tải lên: 30/03/2014, 13:20

... present a summary of the representation and generation characteristics of current NLG systems We mark by characteristics that are needed/desirable in a generation component for textcharacteristics ... possible future conditioning events for state , guaranteed to contain the most cost-efficient future conditioning events for state Using , one needs to extract from the set of most cost-efficient future ... model for generation In Proceedings of the 1st International Natural Language Generation Conference Regina Barzilay 2003 Information Fusion for Multidocument Summarization: Paraphrasing and Generation...

Ngày tải lên: 31/03/2014, 03:20

... economics TEAM LinG Advances in Mobile Radio Access Networks 1.1 FUTURE EVOLUTION OF MOBILE RADIO ACCESS NETWORKS With the accelerating deployment of the third generation (3G) mobile communications networks ... of future cellular networks, various OFDM schemes are being considered as the air interface for the fourth generation mobile communications systems In a mobile communications network, the radio ... efficiency in mobile communications systems increases, nonconstant envelope digital modulation schemes are being employed in various new air interfaces for different mobile radio access systems [1]...

Ngày tải lên: 18/04/2014, 10:43

... current and new directions of manufacturing systems which I believe can lead to the development of more comprehensive and efficient future manufacturing systems People from diverse background like ... systems consist of hardware and software components The hardware components typically comprise of processing stations, material handling systems and automated material storage and retrieval systems ... unloading areas Material handling systems include automated guided vehicle systems, roller conveyors, tow line, shuttle cars etc whereas automated storage and retrieval systems are used to store and...

Ngày tải lên: 20/06/2014, 11:20

... traditional machining systems As a result of high utilizations, these systems are subject to failures more than traditional systems Therefore, reliability and availability analysis of FMC systems are extremely ... Computer Numerical Controlled (CNC) machines and sophisticated material handling systems, such 66 Future Manufacturing Systems as robots, automated guided vehicles (AGV) and automated pallets, all ... manufacturing systems Butler and Rao (1993) use symbolic logic to analyze reliability of complex systems Their heuristic approach is based on artificial intelligence and expert systems Black...

Ngày tải lên: 20/06/2014, 11:20

... control systems, using emergent paradigms and technologies Multi-agent systems and HMSs are two promising paradigms to build this new class of distributed and intelligent manufacturing control systems ... carriers, (8) aircraft, and (9) 124 Future Manufacturing Systems containers and supports The following provides the details of material transport equipments 3.1 Conveyor Systems A Conveyor is used when ... job sp pecification chang ges Fig 11 Gantt chart for case study of robustness g f 118 Future Manufacturing Systems Fig 12 Two layers of ORIN architecture Realizing the agent manufacturing system...

Ngày tải lên: 20/06/2014, 11:20

... 134 Future Manufacturing Systems only those paths which are free and not occupied by vehicles It may also be necessary to consider the future positions of the vehicles ... These are very effective in automated assembly where repetitive work is required 136 Future Manufacturing Systems Intelligent robots can be used to automatically pick the right work piece without ... components on printed circuit boards (PCB), where this kind of problems is frequent 138 Future Manufacturing Systems The purpose of this chapter is to present a class of deterministic scheduling...

Ngày tải lên: 20/06/2014, 11:20

... iterations_without_improvement = 25 09 10 if regeneration = 10 11 stopping_criterion = true else 12 13 sort_the_population_in_ascending_order_of_Cmax() 14 regenerate_population() 15 regeneration = regeneration+1 16 iterations_without_improvement ... result Fig 10 Initial population Fig 12 Regeneration procedure Fig 13 Binary selection Fig 11 Fitness value of each individual 158 Future Manufacturing Systems Fig 14 ST2PX crossover application ... select_individuals_by_the_binary_tournament_selection 18 crossover ST2PX with probability 0.8 19 mutation SWAP with probability 0.1 156 Future Manufacturing Systems 5.5 Example The following example illustrates this algorithm execution Let is...

Ngày tải lên: 20/06/2014, 11:20

... pre-defined system range typical for so called flexible systems but are required to shift between different levels of systems ranges Modern manufacturing systems are increasingly required to be adaptable ... proposed an ACO algorithm to solve the problem with smaller TWT and makespan than 176 Future Manufacturing Systems ATC-BATC, MBS, GA and AS The main contributions of the paper are to create a ... Journal of Production Research, Vol.42, No.8,April 2004, 16211638, ISSN 1366-588X 178 Future Manufacturing Systems Cai Y.W, Kutanoglu E, Hesenbein J et al.(2007) Single-machine scheduling problem...

Ngày tải lên: 20/06/2014, 11:20

... 194 Future Manufacturing Systems Naylor, J B.; Naim M M.; Berry, D (1999) Leagility: integrating the lean and ... possible key practices to incorporate with classical Agile practice was examined 196 Future Manufacturing Systems The remainder of this chapter is arranged into sections as follows: section provides ... principle, although, there are derived and extended applications can be seen, to date 198 Future Manufacturing Systems There are five basic principles of Lean manufacturing: as Specify value, Identify...

Ngày tải lên: 20/06/2014, 11:20