Fundamentals of WiMAX (P2)

... because of the fragmentation of the industry due to the lack of a common standard. The emergence of WiMAX as an industry standard is expected to change this situation. Given the wide variety of solutions ... historical survey of these is beyond the scope of this section. Instead, we provide a brief review of some of the broader patterns in this development. A chronological...

Ngày tải lên: 24/10/2013, 05:15

... of WiMAX 33 2.1 Background on IEEE 802.16 and WiMAX 33 2.2 Salient Features of WiMAX 37 2.3 WiMAX Physical Layer 39 2.3.1 OFDM Basics 39 2.3.2 OFDM Pros and Cons 40 2.3.3 OFDM Parameters in WiMAX ... engineers who want to know WiMAX fundamentals and its performance. The concepts of OFDMA, multiple antenna techniques, and various diversity techniques—which are the backbone...

Ngày tải lên: 27/04/2013, 08:58

... of WiMAX 33 2.1 Background on IEEE 802.16 and WiMAX 33 2.2 Salient Features of WiMAX 37 2.3 WiMAX Physical Layer 39 2.3.1 OFDM Basics 39 2.3.2 OFDM Pros and Cons 40 2.3.3 OFDM Parameters in WiMAX ... engineers who want to know WiMAX fundamentals and its performance. The concepts of OFDMA, multiple antenna techniques, and various diversity techniques—which are the backbone...

Ngày tải lên: 20/10/2013, 07:15

... 458-460 of free space, m 0 , 458 relative, m r , 458 Phase asymptotes of complex poles, 279-282 inverted forms, 272 of real pole, 266-268 of real zero, 269 of RHP zero, 270 Phase control of resonant ... currents, table of, 609 of near-ideal rectifier waveforms, 604-609 Rotation of three-terminal cell, 141-142 Saturation of inductors, 462, 465-466 of magnetic materials, 45...

Ngày tải lên: 13/12/2013, 01:15

... considered to be the ability of the material to absorb energy in the plastic zone. The measure of toughness is the amount of energy absorbed after being stressed upto the point of fracture. (i) Creep- ... • Types and uses of some common non-ferrous metals. • Types and uses of some non-metals. • Important mechanical properties of materials. 1.2.1 Introduction Choice...

Ngày tải lên: 17/12/2013, 11:15

... range of a linear transformation L of U into V is the set of vectors v of V into which some vector u of U is mapped, i.e., the range of L is defined as the set of v = Lu, for every vector u of U.Thekernel ... position and orientation of the vehicle body. As a matter of fact, the control of rolling robots bears common features with that of the redundancy resolution of...

Ngày tải lên: 19/01/2014, 18:20

... Inner diameter of spring, . i D32mm= 3 900 300 40N/mm 40 10 N/m 15 − ===× Spring rate, k Once the value of stiffness is known, then the value of number of active turns, N of the spring ... 4 6 − =+= − k So the value of mean shear stress, and the value of stress amplitude, Estimation of material properties: As no specific use of the spring is mentio...

Ngày tải lên: 23/01/2014, 04:20

... used in the design of leaf springs. 7.3.6 Standard sizes of leaf spring Width (mm) : 25-80 mm in steps of 5mm Thickness (mm) : 2-8 mm in steps of 1mm, 10-16 mm in steps of 2mm Version ... • Design theme of leaf springs • Laminated spring and its modifications 7.3.1 Leaf Springs In order to have an idea of working principle of a leaf spring, let us think...

Ngày tải lên: 23/01/2014, 04:20

... (8.1.1) Where, M : Bending moment at the point of interest d o : Outer diameter of the shaft k : Ratio of inner to outer diameters of the shaft ( k = 0 for a solid shaft because ... Kamalesh, Design of Machine Elements, Prentice Hall of India, New Delhi, 2003. Version 2 ME , IIT Kharagpur Module 8 Design of Shaft...

Ngày tải lên: 23/01/2014, 04:20

... Where, θ = angle of twist L = length of the shaft Version 2 ME , IIT Kharagpur G = shear modulus of elasticity I p = Polar moment of inertia The limiting value of θ varies from 0.3 ... can be shown that the frequency of free vibration of a non-rotating shaft is same as its critical speed. The equation of fundamental or lowest critical speed of a shaft on tw...

Ngày tải lên: 23/01/2014, 05:20