assessing if mobile and wireless is a good fit
Mobile and wireless communications network layer and circuit level design Part 1 potx
Ngày tải lên :
21/06/2014, 14:20
... microstrip antennas, broad band and UWB antennas, reconfigurable microstrip antennas and smart microstrip antennas Their advantages, disadvantages, design technique, structure and application have been ... criteria considered by CAC schemes are usually related to various QoS parameters and have been discussed earlier Each design characteristics has its own advantages and disadvantages The selection among ... operates as a threshold, implying that a new call is admitted provided that at least Ci-Ti+1 channels are available, whereas the admission of a handoff call requires only one available channel...
- 30
- 326
- 0
Mobile and wireless communications network layer and circuit level design Part 2 potx
Ngày tải lên :
21/06/2014, 14:20
... Foschini and Miljanic (Foschini and Miljanic 1993) has become a standard benchmark due to its academic and practical significance (see (Cai, Wang et al 2004; Uykan and Koivo 2004; Uykan and Koivo ... Communications 2004 (WPMC'04) Abano Terme, Italy: EURECOM+1410 Rajaratmam, M., & Takawira, F (1999) Performance analysis of highway cellular networks using generalised arrival and generalised service ... proposed by Yang and Wang can be classified as: all-to-all broadcasting and all-to-all personalized exchange depending on the nature of the communication (Yang and Wang 2001) In the former case, the...
- 30
- 447
- 0
Mobile and wireless communications network layer and circuit level design Part 3 pot
Ngày tải lên :
21/06/2014, 14:20
... relevant operations like for example authentication and authorization In the area of the mobile phones Java is very wide spread and has a large acceptance with all considerable hardware manufacturers ... new specifications, there is a high market acceptance of Java Because of these reasons Java has become a de facto standard for mobile application development and this will remain for a longer ... 802.15.4/ 4a standards for low data rate wireless personal data networks." In: 4th Workshop on Positioning, Navigation and Communication 2007 (WPNC 07), T Kaiser, K Jobmann, and K Kyamakya, eds., Hannover,...
- 30
- 396
- 0
Mobile and wireless communications network layer and circuit level design Part 5 docx
Ngày tải lên :
21/06/2014, 14:20
... patterns The radiation characteristics of the proposed antenna are also investigated Figures 15 and 16 illustrate the simulated and measured H-plane and E-plane radiation patterns 128 Mobile and ... stepped-trapezoidal patch antenna shows an acceptable radiation pattern variation in its entire operational bandwidth since the degradation happens only for a small part of the entire bandwidth and ... bandwidths and small size The earliest planar dipole is the Brown-Woodward bowtie antenna, which is a planar version of a conical antenna [Chen, et al., 2006] 4.1 Ultra wideband planar monopole antennas...
- 30
- 487
- 0
Mobile and wireless communications network layer and circuit level design Part 7 docx
Ngày tải lên :
21/06/2014, 14:20
... 837-842, May 1997 Dalia Nashaat, hala Elsadek and hani Ghali, " Single Feed compact quad band PIFA antenna for wireless communication Applications", IEEE Transactions on Antenna and Propagation, ... Taga, “Analysis of planar inverted-F antennas and antenna design for portable radio equipment,” in K Hirasawa and M Haneishi (Eds.), Analysis, Design and Measurement of small and Low-Profile Antennas, ... 2007, pp 865-876 Hala Elsadek and Dalai Nashaat," Ultra Miniaturized E-shaped Dual band PIFA on cheap Foam and FR4 substrates", Journal of Electromagnetic Waves and Applications (JEMWA), Vol 20, No.3,...
- 30
- 397
- 0
Mobile and wireless communications network layer and circuit level design Part 8 doc
Ngày tải lên :
21/06/2014, 14:20
... (Carta et al, 2005) This is far below the 60dB required by wireless standards (Long & Maliepaard, 1999) In fact, phase mismatch between I and Q signals and gain mismatch between mixer signal paths ... (table 2) that pole mismatch of 2% leads to an IRR degradation higher than 20dB and gain mismatch greater than 10% cause bandwidth degradation higher than 200MHz It depicts that the gain mismatch ... technique is proposed in (Montemayor & Razavi, 2000) and consists on a self-calibrating architecture It determines the phase and gain mismatches of a Weaver architecture and applies a feedback through...
- 30
- 427
- 0
Mobile and wireless communications network layer and circuit level design Part 9 ppt
Ngày tải lên :
21/06/2014, 14:20
... LR-WPAN Applications Wenceslas Rahajandraibe, Lakhdar Zaïd and Fayrouz Haddad IM2NP – University of Provence Marseille - France Introduction The last decade has been marked by a rapid growing of wireless ... personal area networks (WPAN), phased array RF systems, and other emerging wireless communication such as wireless body area network (WBAN), radar, and imaging applications operating in a very ... process biases, resistors are made same width and capacitors consider same area-to-periphery ratios Dummy resistors are added to either border of an array of matched resistors to guarantee uniform...
- 30
- 374
- 0
Mobile and wireless communications network layer and circuit level design Part 10 doc
Ngày tải lên :
21/06/2014, 14:20
... Nyquist spectral width of the associated A/ D and D /A converters As commercially available, reasonably priced analogue-to-digital (A/ D) and digital-to-analogue (D /A) converters can not operate at ... Bo Yang, Yuan Mo, Ke Wang, Fan Zhang, Zongru Liu, Gordana Felic, Praveenkumar Nadagouda, Tim Walsh, Robin J Evans, Iven Mareels, and Efstratios Skafidas National ICT Australia (NICTA), Department ... increase gain of the PA by reducing the Miller capacitance, and also to improve the amplifiers stability When biased at 200 A/ μm each cascode stage possesses a maximum available gain (MAG) of 7dB at...
- 30
- 453
- 0
Mobile and wireless communications network layer and circuit level design Part 11 pdf
Ngày tải lên :
21/06/2014, 14:20
... order to achieve a capacitance tuning ratio of An important consideration in VCO design is the gate leakage current of the varactor increases the VCO’s phase noise and its parasitic capacitance reduces ... National ICT Australia (NICTA) NICTA is funded by the Australian Government as represented by the Department of Broadband, Communications and the Digital Economy and the Australian Research Council ... modern and appropriated RFIC applications, new mobile systems demand antennas in small dimensions with wideband and reasonable gain, offering the possibility of a multiband operation (Liberti & Rappaport,...
- 30
- 353
- 0
Mobile and wireless communications network layer and circuit level design Part 12 doc
Ngày tải lên :
21/06/2014, 14:20
... In the cascode configuration, transistor M1 has a smaller drain–gate voltage swing This is because the voltage at D1 is always lower 340 Mobile and Wireless Communications: Network layer and circuit ... gate-source and gate-drain capacitance versus VGS If the device is operating at triode region, such that S and D have approximately equal voltages, then the gate-channel (WLCOX) is divided equally and ... powers compared with the non-compensated amplifier whereas the disadvantages are low power gain and increasing input capacitance 326 Mobile and Wireless Communications: Network layer and circuit...
- 30
- 389
- 0
Mobile and wireless communications network layer and circuit level design Part 13 pptx
Ngày tải lên :
21/06/2014, 14:20
... frequency bandwidth in RF range is comparatively lower by a factor of 105 Narrow beam size - The optical radiation prides itself with an extremely narrow beam, a typical laser beam has a diffraction ... challenges; most especially the bandwidth/high data rate requirements of end users at an affordable cost The fact that FSO is transparent to traffic type and data protocol makes its integration ... Remark Vertical cavity surface emitting laser Fabry-Perot ~1300/~1550 Distributed-feedback lasers ~10,000 Quantum cascade laser Near Infrared LED Table Optical sources 361 Cheap and readily available...
- 30
- 412
- 0
Mobile and wireless communications physical layer development and implementation Part 1 docx
Ngày tải lên :
21/06/2014, 14:20
... Diversity and Scheduling in OFDMA Relay System 219 Salma Ait Fares, Fumiyuki Adachi and Eisuke Kudoh Section 4: Modeling and Performance Characterization 13 Performance Modelling and Analysis of Mobile ... Fading Channels 067 Tuan A Tran and Abu B Sesay Sequential Blind Beamforming for Wireless Multipath Communications in Confined Areas 087 Salma Ait Fares, Tayeb Denidni, Sofiene Affes and Charles ... unified data and energy model for wireless communication and a new system level mathematical performance analysis of mobile cellular CDMA networks are presented In addition, novel approach to modeling...
- 20
- 331
- 1
Mobile and wireless communications physical layer development and implementation Part 2 pptx
Ngày tải lên :
21/06/2014, 14:20
... Analysis: Applications to Channel Modelling and Estimation 25 Wireless Communications and Multitaper Analysis: Applications to Channel Modelling and Estimation Sahar Javaher Haghighi and Serguei Primak ... conclusion that 2 ξ = ξ I + jξ Q is a Gaussian process with zero mean and unequal variances σI and σQ of the real and imaginary parts Therefore ξ is an improper random process (Schreier and Scharf; 2003) ... 2006) If the bases and the channel under investigation occupy the same band, accurate 26 Mobile and Wireless Communications: Physical layer development and implementation and sparse representations...
- 20
- 427
- 1
Mobile and wireless communications physical layer development and implementation Part 3 potx
Ngày tải lên :
21/06/2014, 14:20
... services and application as shown in Fig (Grace et al., 2001b; Yang & Mohammed, 200 8a) HAPs can act as base-stations or relay nodes, which may be effectively regarded as a very tall antenna mast or a ... links are not available In parallel with these well established networks, a new alternative using aerial high altitude platforms (HAPs) has emerged and attracted international attentions (Mohammed ... J and Utschick, W (2006) Smart Antennas: State of the Art, Hindawi, NY Kirsteins, I., Mehta, S and Fay, J (2006) Adaptive separation of unknown narrowband and broadband time series, Proc ICASSP...
- 20
- 361
- 1
Mobile and wireless communications physical layer development and implementation Part 4 potx
Ngày tải lên :
21/06/2014, 14:20
... channel from the transmit antenna to the kth receive antenna In (1), ak (t ) is an m- Nakagami distributed random variable (Nakagami, 1960), jk (t ) is a random signal phase uniformly distributed on ... where ail s are channel fading gains from the ith transmit-antenna to the lth receiveantenna, which are Nakagami-m distributed random variables with fading parameters mil s and Wil s, and wil s are ... ,i s are independently and identically 60 Mobile and Wireless Communications: Physical layer development and implementation distributed zeromean real Gaussian random variables with variances...
- 20
- 407
- 1
Mobile and wireless communications physical layer development and implementation Part 6 pdf
Ngày tải lên :
21/06/2014, 14:20
... sequentially using adapted LMS with the first beamformer output as a reference signal A new synchronization approach for multipath propagation, based on combining a CMA-AAA and adaptive fractional ... considered A desired signal is propagated along four multipaths to the antenna array while the interference and noise are simulated as additive white Gaussian noise The first path is direct with a path ... is the signal to noise ratio in each receiving antenna and Nrx is the number of receiving antennas and Ntx is the number of transmitting antennas Interference analysis Assuming that we have a...
- 20
- 434
- 1
Mobile and wireless communications physical layer development and implementation Part 9 potx
Ngày tải lên :
21/06/2014, 14:20
... the radiator as two parallel uniform magnetic line sources of length a, separated by distance b If the slot voltage across either radiating edge is taken as V0, the calculated fields are (Carver ... patch antenna on each side is arranged along z-axis To simplify the MIMO system is projected to x-y plane, it has P transmitter and Q receiver The propagation is considered as a LOS situation, a ... different antenna spacing 800 162 Mobile and Wireless Communications: Physical layer development and implementation From the comparison about Fig 10 (a) and Fig 10(b), the capacity is inversely related...
- 20
- 319
- 0
Mobile and wireless communications physical layer development and implementation Part 12 pot
Ngày tải lên :
21/06/2014, 14:20
... to achieve greater capacity Analyzing and evaluating the capacity of wireless OFDMA-based relay in multi-source destination pair’s networks is one of the most important issues However, if the wireless ... level analysis is related to the physical channel characterization and involves statistics such as the probability distributions of the channel states duration, which, in general, are not easily ... as a “virtual antenna array” to forward the information cooperatively while an appropriate combining at the destination realizes diversity gain Therefore cooperative relaying is regarded as a...
- 20
- 294
- 0
Mobile and wireless communications physical layer development and implementation Part 14 pdf
Ngày tải lên :
21/06/2014, 14:20
... Reliabilityand Delay-Critical Applications Yang Liu and Ye Liu Department of Computer Science, University of Vaasa PL 700, 65101 Vaasa, Finland Email: yang.liu@uwasa.fi Introduction More and more applications ... corrupted data packets (which have to be retransmitted and can not be deleted from the data storage) Data aggregation (Aggregate): Aggregation of successfully transmitted and lost data bits Input ... with Moving Senders and Fixed Receivers 259 Parameter model (ideal send param): Calculation of ideal parameters for data transmission Data storage (data storage): Calculation of the current...
- 20
- 294
- 0