xây dựng cơ sở phương pháp luận cho lí luận dạy học hoá học
Radio resource allocation in wireless OFDM systems
... -player games with a simple assumption that the payoff functions are non-negative when a player chooses to transmit With the optimal solution obtained from centralized optimization, we calculate ... to the channel states, the number of bits to be transmitted on a subcarrier can be determined by choosing the most suitable modulation assignment from a finite set This process is called bit loading, ... PeB are to be used, ρA and ρB are no longer constants but rather depending on the values of rlk chosen This will result in highly nonlinear objective function where in each term, both the exponent...
- 163
- 279
- 0
High capacity high spectral efficiency transmission techniques in wireless broadband systems
... to Dr Li Yuan, for the discussions and cooperations on Turbo coded modulation Thank Dr Chai Chin Choy for the discussions about some common research topics My thanks also go to the Department of ... Class and users with changing parameters π1 , π2 , π3 165 5.12 Choices of π1 , π2 , π3 at equal excess throughput of Class and 167 6.1 System Model of BS Transmitter ... scheme can enhance the capacity, compared to the conventional scheme, if proper profile index is chosen for the transmit power of the data users Moreover, the effects of the data activity factor...
- 265
- 226
- 0
Báo cáo hóa học: " Research Article Signal Processing by Generalized Receiver in DS-CDMA Wireless Communication Systems with Optimal Combining and Partial Cancellation" docx
... access (DS-CDMA) system [20] To ensure a good performance, PCF for each PPIC stage needs to be chosen appropriately, where the PCF should be increased as the reliability of the MAI estimates ... practice is discussed in detail in [2, pages 669–695] and [5] More detailed discussion about a choice of PF and AF and their amplitudefrequency responses is given in [2, 5] (see also http://www ... , 2σn (35) where Eb is the average symbol energy of the transmitted signal s(t) Assume that we choose 2L (1 ≤ L ≤ N ) quadrature branched out of the 2N branches Then, the SNR per symbol at the...
- 15
- 421
- 0
Báo cáo sinh học: " Research Article Automatic Modulation Recognition Using Wavelet Transform and Neural Networks in Wireless Systems" ppt
... continuous wavelet transform (CWT) to extract the classification features One of the reasons for this choice is due to the capability of the transform to precisely introduce the properties of the signal ... EURASIP Journal on Advances in Signal Processing modulation recognition The main reason for this choice is due to the capability of this transform to locate, in time and frequency, the instantaneous ... defines the so-called CWT, where CWT(a, τ) define the wavelet transform coefficients The Haar wavelet is chosen as the mother wavelet where it is given by [25] ⎧ ⎪1, ⎪ ⎪ ⎪ ⎪ ⎨ ψ(t) = ⎪−1, ⎪ ⎪ ⎪ ⎪ ⎩ 0,...
- 13
- 509
- 0
Báo cáo hóa học: " Editorial Cross-Layer Design for the Physical, MAC, and Link Layer in Wireless Systems" doc
... Their stochastic non-cooperative algorithms for power allocation, spreading code allocation, and choice of the uplink (linear) receiver are shown via simulation to approach the performance of cooperative...
- 3
- 376
- 0
Co existence of wireless communication systems in ISM bands an analytical study
... take the challenges In addition, I need thank to NUS and ECE-I2R laboratory for giving me the scholarship and providing a wonderful technical environment I am also grateful to all my friends ... propagation model is based on large scale fading assumption The path loss exponent is carefully chosen for WLAN and WPAN operating environment The path of signal power attenuation is classified ... bandwidths used by both systems are less than the coherent bandwidth in an indoor environment, we chose a flat quasi-static fading channel model, in which the received signal only has amplitude...
- 170
- 332
- 0
Wireless & Mobile Systems
... Hình 1.1 Đa số khối chức năngđều đươc dùng cho hệ có không giây Tuy nhiên khối nằm vạch rời cần thiết cho hệ thống không giây Trừ antenna, khối lại dùng cho hệ có giây Hình 1.1 Một hệ thống không...
- 11
- 468
- 1
Fixed Wireless Access Systems
... note that the services offered through an LMDS network are entirely dependent on the operator’s choice of service The main advantages of LMDS systems are [7–10]: † † † † † † It is easy and fast ... Distribution Service (LMDS), and Microwave Service It is expected that over 4.4 million subscribers will choose fixed wireless broadband services by 2004 MMDS networks utilize a single omnidirectional central ... operate Therefore, the average LMDS cell can cover between 32.6 and 73.3 km The service provider can choose to launch its system at a pace to match its individual business plan without sacrificing QoS...
- 10
- 330
- 0
Simulation of Wireless Network Systems
... characteristics and period of the RNG Moreover, the choice of m affects the characteristics of the generated sequence † Multiplicative LCG with m ¼ k This choice of m, provides an easy mode of operation ... k In order to increase the period of the generated sequence, the modulus m is chosen to be a prime number A proper choice of the multiplier ‘a’, can Wireless Networks 352 give us a period of ðm ... described in the IEEE 802.11b standard The minimum back off counter was chosen to be 31 and the maximum back off counter was chosen to be 1023 The data packets were generated according to the uniform...
- 40
- 328
- 1
ON APPLICATION-PERCEIVED QUALITY OF SERVICE IN WIRELESS NETWORKS
... Chevul Department of Telecommunication Systems Department of Telecommunication Systems School of Engineering School of Engineering Publisher: Blekinge Institute of Technology Blekinge Institute of ... Quality of Service in Wireless Networks Stefan Chevul Department of Telecommunication Systems School of Engineering Blekinge Institute of Technology SWEDEN c � 2006 Stefan Chevul Dissertation ... reports on my research in the field application-perceived Quality of Service The work was done at the School of Engineering at Blekinge Institute of Technology (BTH) in the context of the Personal Information...
- 140
- 447
- 0
Inclusion of new types in relational database systems
... requires the construction of a non-trivial loader An "industrial strength" implementation might choose to specify the user types which an installation wants at the time the DBMS is installed In ... access method interfaces; see [ASTR76, ALLC80] for other proposals Each DBMS implementation will choose their own collection of procedures and calling conventions If this interface is publicly ... implementor need only construct the remainder Moreover, if the designer of a new access method chooses to utilize the same physical page layout as some existing access method, then replace and...
- 19
- 378
- 0
Soft errors in modern electronic systems
... Spring Street, New York, NY 10013, USA), except for brief excerpts in connection with reviews or scholarly analysis Use in connection with any form of information storage and retrieval, electronic...
- 335
- 297
- 0
Tài liệu THE ROLE OF UNIVERSITIES IN REGIONAL INNOVATION SYSTEMS - A NORDIC PERSPECTIVE pdf
... university was established by merging three professional schools founded during the 19th century: a school of theology, a school of medicine and a law school, with a Faculty of Arts included as well Before ... Norwegian School of Veterinary Science (1935, Oslo), Norwegian School of Economics and Business Administration (1936, Bergen), Norwegian School of Sport Sciences (1968, Oslo), Oslo School of Architecture ... Bifröst Business School is a private school and university education began there in 1988 The Hvanneyri Agricultural University was founded in 1999 on the roots of Hvanneyri Agricultural School starting...
- 180
- 596
- 1
Tài liệu ADVANCES IN DISCRETE TIME SYSTEMS docx
... Croatia A free online edition of this book is available at www.intechopen.com Additional hard copies can be obtained from orders@intechopen.com Advances in Discrete Time Systems, Edited by Magdi S ... ISBN 978-953-51-0875-7 free online editions of InTech Books and Journals can be found at www.intechopen.com Contents Preface VII Section Robust Control Chapter Stochastic Mixed LQR/H∞ Control for ... also presented Author details Xiaojie Xu* Address all correspondence to: xiaojiex@public.wh.hb.cn School of Electrical Engineering, Wuhan University, P R China References [1] Astrom, K J (1970) Introduction...
- 256
- 373
- 0
Tài liệu Teamwork in Multi-Agent Systems: A Formal Approach pptx
... satisfying, for modeling applicable multi-agent systems it is appropriate to choose a more recognizable and explicit representation We choose agents, actions and plans as the prime movers of our theory, ... recalled that a place of their dreams exists in reality! Certosa di Pontignano, a meeting place of scholars, situated in the old Carthusian monastery near Siena, Italy, hosted them out of the courtesy ... as discovered in www.it-ebooks.info xviii Preface the social sciences, management science and psychology The resulting model TeamLog is designed to be lively: to grow or to shrink, but especially...
- 246
- 4,882
- 0
Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình xác định các nguyên tắc biên soạn khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct mở máy động cơ lồng sóc các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25